Implement workflow hardening (CodeQL, Dependabot, Lychee) (#565)

* chore: fix codeql.yml indentation

* chore: add explicit permissions to release-drafter workflow

* Potential fix for pull request finding 'CodeQL / Workflow does not contain permissions'

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

* chore: remove codeql.yml as it is handled by GitHub default setup

---------

Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

Author: firstof9

.github/dependabot.yml

@@ -9,3 +9,8 @@ updates:
     directory: "/"                # Location of package manifests
     schedule:
       interval: "daily"
+
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"

.github/workflows/links.yml

@@ -0,0 +1,23 @@
+name: Links
+
+on:
+  push:
+    branches: ["main", "dev"]
+  pull_request:
+    branches: ["main", "dev"]
+  schedule:
+    - cron: "0 0 * * 1"
+
+permissions:
+  contents: read
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6
+
+      - name: Link Checker
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411  # v2
+        with:
+          args: --verbose --no-progress './**/*.md'

.github/workflows/release-drafter.yml

@@ -5,6 +5,10 @@ on:
     branches:
       - main
 
+permissions:
+  contents: write
+  pull-requests: read
+
 jobs:
   update_release_draft:
     runs-on: ubuntu-latest