feat: add explicit read-only permission (#1824)

Author: maxday

.github/workflows/ci-collector.yml

@@ -14,6 +14,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   test:
     runs-on: ubuntu-latest

.github/workflows/ci-nodejs.yml

@@ -14,6 +14,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/ci-python.yml

@@ -20,6 +20,9 @@ env:
   # https://github.com/open-telemetry/opentelemetry-python-contrib/blob/main/.github/workflows/test.yml#L9
   CORE_REPO_SHA: v1.19.0
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

.github/workflows/ci-shellcheck.yml

@@ -2,6 +2,9 @@ name: "Continuous Build (shellcheck)"
 
 on: [push, pull_request]
 
+permissions:
+  contents: read
+
 jobs:
   shellcheck:
     runs-on: ubuntu-latest

.github/workflows/ci-terraform.yml

@@ -14,6 +14,9 @@ on:
     branches:
       - main
 
+permissions:
+  contents: read
+
 jobs:
   check-terraform-syntax:
     runs-on: ubuntu-latest

.github/workflows/codeql.yml

@@ -20,6 +20,9 @@ on:
   schedule:
     - cron: '37 10 * * 2'
 
+permissions:
+  contents: read
+
 jobs:
   analyze:
     name: Analyze