Update publish.yml (#64)

.github/workflows/publish.yml

@@ -9,6 +9,7 @@ jobs:
   publish:
     permissions:
       id-token: write # Required for authentication using OIDC
+    environment: pub.dev
     runs-on: ubuntu-latest
     steps:
 
@@ -36,8 +37,3 @@ jobs:
       - name: Publish
         run: |
           dart pub publish --force
-
-        working-directory: lib
-
-
-