diff --git a/yarn.lock b/yarn.lock
index 2b7f1c9..0f6e348 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -986,13 +986,6 @@
     "@types/connect" "*"
     "@types/node" "*"
 
-"@types/bson@*":
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/@types/bson/-/bson-4.0.1.tgz#2bfc80819e7055b76d5496d5344ed23e5d12bbb2"
-  integrity sha512-K6VAEdLVJFBxKp8m5cRTbUfeZpuSvOuLKJLrgw9ANIXo00RiyGzgH4BKWWR4F520gV4tWmxG7q9sKQRVDuzrBw==
-  dependencies:
-    "@types/node" "*"
-
 "@types/color-name@^1.1.1":
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/@types/color-name/-/color-name-1.1.1.tgz#1c1261bbeaa10a8055bbc5d8ab84b7b2afc846a0"
@@ -1005,13 +998,6 @@
   dependencies:
     "@types/node" "*"
 
-"@types/cors@^2.8.6":
-  version "2.8.6"
-  resolved "https://registry.yarnpkg.com/@types/cors/-/cors-2.8.6.tgz#cfaab33c49c15b1ded32f235111ce9123009bd02"
-  integrity sha512-invOmosX0DqbpA+cE2yoHGUlF/blyf7nB0OGYBBiH27crcVm5NmFaZkLP4Ta1hGaesckCi5lVLlydNJCxkTOSg==
-  dependencies:
-    "@types/express" "*"
-
 "@types/eslint-visitor-keys@^1.0.0":
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/@types/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#1ee30d79544ca84d68d4b3cdb0af4f205663dd2d"
@@ -1025,7 +1011,7 @@
     "@types/node" "*"
     "@types/range-parser" "*"
 
-"@types/express@*", "@types/express@^4.17.2":
+"@types/express@^4.17.2":
   version "4.17.2"
   resolved "https://registry.yarnpkg.com/@types/express/-/express-4.17.2.tgz#a0fb7a23d8855bac31bc01d5a58cadd9b2173e6c"
   integrity sha512-5mHFNyavtLoJmnusB8OKJ5bshSzw+qkMIBAobLrIM48HJvunFva9mOa6aBwh64lBFyNwBbs0xiEFuj4eU/NjCA==
@@ -1072,22 +1058,6 @@
   resolved "https://registry.yarnpkg.com/@types/mime/-/mime-2.0.1.tgz#dc488842312a7f075149312905b5e3c0b054c79d"
   integrity sha512-FwI9gX75FgVBJ7ywgnq/P7tw+/o1GUbtP0KzbtusLigAOgIgNISRK0ZPl4qertvXSIE8YbsVJueQ90cDt9YYyw==
 
-"@types/mongodb@*":
-  version "3.3.16"
-  resolved "https://registry.yarnpkg.com/@types/mongodb/-/mongodb-3.3.16.tgz#3b125aa0e31ef0f6733fcfcf507cce1324823a26"
-  integrity sha512-i1Ov36BXdp+urtPsaSvrNfCdsaVn4Ukq1m1kGyzdWB1+eg3gJ68unXU5LNmnF4EAMRFY6FXZzA7/W3NST40b8g==
-  dependencies:
-    "@types/bson" "*"
-    "@types/node" "*"
-
-"@types/mongoose@^5.7.1":
-  version "5.7.1"
-  resolved "https://registry.yarnpkg.com/@types/mongoose/-/mongoose-5.7.1.tgz#503d902e873dce8546f2fed6b8ed9c6474cb353d"
-  integrity sha512-lCe+ctykvXgI58bWlEAgladuVHmgSWbAuCMapy9+2m+aUm4DfjYGJ1HXIqubr+YflDN8hfjDaX7BGVxO/Fl06Q==
-  dependencies:
-    "@types/mongodb" "*"
-    "@types/node" "*"
-
 "@types/node@*":
   version "13.7.1"
   resolved "https://registry.yarnpkg.com/@types/node/-/node-13.7.1.tgz#238eb34a66431b71d2aaddeaa7db166f25971a0d"
@@ -1765,14 +1735,6 @@ core-util-is@1.0.2:
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
   integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
 
-cors@^2.8.5:
-  version "2.8.5"
-  resolved "https://registry.yarnpkg.com/cors/-/cors-2.8.5.tgz#eac11da51592dd86b9f06f6e7ac293b3df875d29"
-  integrity sha512-KIHbLJqu73RGr/hnbrO9uBeixNGuvSQjul/jdFvS/KFSIH1hWVd1ng7zOHx+YrEfInLG7q4n6GHQ9cDtxv/P6g==
-  dependencies:
-    object-assign "^4"
-    vary "^1"
-
 create-error-class@^3.0.0:
   version "3.0.2"
   resolved "https://registry.yarnpkg.com/create-error-class/-/create-error-class-3.0.2.tgz#06be7abef947a3f14a30fd610671d401bca8b7b6"
@@ -2547,9 +2509,9 @@ getpass@^0.1.1:
     assert-plus "^1.0.0"
 
 glob-parent@^5.0.0, glob-parent@~5.1.0:
-  version "5.1.0"
-  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.0.tgz#5f4c1d1e748d30cd73ad2944b3577a81b081e8c2"
-  integrity sha512-qjtRgnIVmOfnKUE3NJAQEdk+lKrxfw8t5ke7SXtfMTHcjsBfOfWXCQfdb30zfDoZQ2IRSIiidmjtbHZPZ++Ihw==
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/glob-parent/-/glob-parent-5.1.2.tgz#869832c58034fe68a4093c17dc15e8340d8401c4"
+  integrity sha512-AOIgSQCepiJYwP3ARnGx+5VnTu2HBYdzbGP45eLw1vr3zB3vZLeyed1sC9hnbcOc9/SrMyM5RPQrkGz4aS9Zow==
   dependencies:
     is-glob "^4.0.1"
 
@@ -3935,7 +3897,7 @@ oauth-sign@~0.9.0:
   resolved "https://registry.yarnpkg.com/oauth-sign/-/oauth-sign-0.9.0.tgz#47a7b016baa68b5fa0ecf3dee08a85c679ac6455"
   integrity sha512-fexhUFFPTGV8ybAtSIGbV6gOkSv8UtRbDBnAyLQw4QPKkgNlsH2ByPGtMUqdWkos6YCRmAqViwgZrJc/mRDzZQ==
 
-object-assign@^4, object-assign@^4.0.1:
+object-assign@^4.0.1:
   version "4.1.1"
   resolved "https://registry.yarnpkg.com/object-assign/-/object-assign-4.1.1.tgz#2109adc7965887cfc05cbbd442cac8bfbb360863"
   integrity sha1-IQmtx5ZYh8/AXLvUQsrIv7s2CGM=
@@ -4334,11 +4296,6 @@ readdirp@~3.3.0:
   dependencies:
     picomatch "^2.0.7"
 
-readline-sync@^1.4.10:
-  version "1.4.10"
-  resolved "https://registry.yarnpkg.com/readline-sync/-/readline-sync-1.4.10.tgz#41df7fbb4b6312d673011594145705bf56d8873b"
-  integrity sha512-gNva8/6UAe8QYepIQH/jQ2qn91Qj0B9sYjMBBs3QOB8F2CXcKgLxQaJRP76sWVRQt+QU+8fAkCbCvjjMFu7Ycw==
-
 realpath-native@^1.1.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/realpath-native/-/realpath-native-1.1.0.tgz#2003294fea23fb0672f2476ebe22fcf498a2d65c"
@@ -5330,11 +5287,6 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-vary@^1:
-  version "1.1.2"
-  resolved "https://registry.yarnpkg.com/vary/-/vary-1.1.2.tgz#2299f02c6ded30d4a5961b0b9f74524a18f634fc"
-  integrity sha1-IpnwLG3tMNSllhsLn3RSShj2NPw=
-
 verror@1.10.0:
   version "1.10.0"
   resolved "https://registry.yarnpkg.com/verror/-/verror-1.10.0.tgz#3a105ca17053af55d6e270c1f8288682e18da400"