chore(dev-deps): bump @salesforce/cli-plugins-testkit

Bumps [@salesforce/cli-plugins-testkit](https://github.com/salesforcecli/cli-plugins-testkit) from 5.1.1 to 5.1.3.
- [Release notes](https://github.com/salesforcecli/cli-plugins-testkit/releases)
- [Changelog](https://github.com/salesforcecli/cli-plugins-testkit/blob/main/CHANGELOG.md)
- [Commits](salesforcecli/cli-plugins-testkit@5.1.1...5.1.3)

---
updated-dependencies:
- dependency-name: "@salesforce/cli-plugins-testkit"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

yarn.lock

@@ -966,11 +966,11 @@
   integrity sha512-+1VkjdD0QBLPodGrJUeqarH8VAIvQODIbwh9XpP5Syisf7YoQgsJKPNFoqqLQlu+VQ/tVSshMR6loPMn8U+dPg==
 
 "@salesforce/cli-plugins-testkit@^5":
-  version "5.1.1"
-  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.1.tgz#73baef2d27abc6cbb11c82e2869a3b4b57ff342d"
-  integrity sha512-qllBs+dGYIMS7GrJfJaalJSNsNohDAiLLHOZXk8WL+aZ1dRGDaWTiS4gyZKPKgeahXuNPTBxDqNg7WajvfNcxg==
+  version "5.1.3"
+  resolved "https://registry.yarnpkg.com/@salesforce/cli-plugins-testkit/-/cli-plugins-testkit-5.1.3.tgz#5e7a7afebaa9a2c02eadbf533273d496335929d6"
+  integrity sha512-wmaiVR2Hr6AGUBdDF4M5xCEm4iczNdkm3lVlz8dU/8nISEAyNHOUkt2sB07Yx5oXoDMNNuuxM2DthxxMxxwzzA==
   dependencies:
-    "@salesforce/core" "^6.4.0"
+    "@salesforce/core" "^6.4.2"
     "@salesforce/kit" "^3.0.15"
     "@salesforce/ts-types" "^2.0.9"
     "@types/shelljs" "^0.8.15"
@@ -1004,7 +1004,7 @@
     semver "^7.5.4"
     ts-retry-promise "^0.7.1"
 
-"@salesforce/core@^6.4.0", "@salesforce/core@^6.4.1":
+"@salesforce/core@^6.4.0", "@salesforce/core@^6.4.1", "@salesforce/core@^6.4.2":
   version "6.4.2"
   resolved "https://registry.yarnpkg.com/@salesforce/core/-/core-6.4.2.tgz#e6e5e2d5e6ad17f1cbe0feb5a0e55e8b74c91e3c"
   integrity sha512-ZtLwgI18f1th6SY0fKmuiyVGGwTXPy4nI+KfXzkww/vqdPxDhAfoHwqvFeo4tjFE2rldK7IPiIIYdtpsaI8d5g==