chore: Set permissions for GitHub actions

Restrict the GitHub token permissions only to the required ones; this way, even if the attackers will succeed in compromising your workflow, they won’t be able to do much.

- Included permissions for the action. https://github.com/ossf/scorecard/blob/main/docs/checks.md#token-permissions

https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#permissions

https://docs.github.com/en/actions/using-jobs/assigning-permissions-to-jobs

[Keeping your GitHub Actions and workflows secure Part 1: Preventing pwn requests](https://securitylab.github.com/research/github-actions-preventing-pwn-requests/)

Signed-off-by: naveen <172697+naveensrinivasan@users.noreply.github.com>

.github/workflows/continuous-integration.yml

@@ -12,6 +12,9 @@ env:
   COMPOSER_FLAGS: "--ansi --no-interaction --no-progress --prefer-dist"
   COMPOSER_UPDATE_FLAGS: ""
 
+permissions:
+  contents: read
+
 jobs:
   tests:
     name: "CI"

.github/workflows/lint.yml

@@ -8,6 +8,9 @@ on:
     paths-ignore:
       - 'doc/**'
 
+permissions:
+  contents: read
+
 jobs:
   tests:
     name: "Lint"

.github/workflows/phpstan.yml

@@ -12,6 +12,9 @@ env:
   COMPOSER_FLAGS: "--ansi --no-interaction --no-progress --prefer-dist"
   SYMFONY_PHPUNIT_VERSION: ""
 
+permissions:
+  contents: read
+
 jobs:
   tests:
     name: "PHPStan"