chore: Set permissions for GitHub actions (#8550)

Restrict the GitHub token permissions only to just what is required and make them read-only where possible.

Signed-off-by: neilnaveen <42328488+neilnaveen@users.noreply.github.com>

.github/workflows/build-cli.yml

@@ -8,8 +8,13 @@ on:
 env:
   CI: true
 
+permissions:
+  contents: read
+
 jobs:
   build_cli:
+    permissions:
+      contents: write  # for softprops/action-gh-release to create GitHub release
     runs-on: macos-11
     steps:
       - uses: actions/checkout@v2

.github/workflows/integration-tests.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest

.github/workflows/nodejs.yml

@@ -9,6 +9,9 @@ on:
   pull_request:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/release-insiders.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: [master]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/release.yml

@@ -4,6 +4,9 @@ on:
   release:
     types: [published]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest