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: neilnaveen <42328488+neilnaveen@users.noreply.github.com>

.github/workflows/lint.yml

@@ -1,6 +1,9 @@
 name: Lint
 on: pull_request
 
+permissions:
+  contents: read
+
 jobs:
   xml-linters:
     runs-on: ubuntu-latest

.github/workflows/package.yml

@@ -7,6 +7,9 @@ on:
             - main
             - stable*
 
+permissions:
+  contents: read
+
 jobs:
   release-tarball:
     runs-on: ubuntu-latest

.github/workflows/static-analysis.yml

@@ -7,6 +7,9 @@ on:
       - main
       - stable*
 
+permissions:
+  contents: read
+
 jobs:
   static-psalm-analysis:
       runs-on: ubuntu-latest

.github/workflows/test.yml

@@ -7,6 +7,9 @@ on:
       - main
       - stable*
 
+permissions:
+  contents: read
+
 jobs:
   unit-tests:
     runs-on: ubuntu-latest