ci: fix action repository access

.gitea/workflows/security-audit.yml

@@ -1,7 +1,6 @@
 name: Security Audit
 
 on:
-  pull_request:
   push:
     branches:
       - main
@@ -21,6 +20,10 @@ jobs:
       - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5
         with:
           path: govoplan
+      - name: Use anonymous HTTPS for public GovOPlaN repositories
+        run: |
+          git config --global --add url."https://git.add-ideas.de/add-ideas/govoplan".insteadOf "git@git.add-ideas.de:add-ideas/govoplan"
+          git config --global --add url."https://git.add-ideas.de/add-ideas/govoplan".insteadOf "ssh://git@git.add-ideas.de/add-ideas/govoplan"
       - name: Configure SSH for repository bootstrap
         env:
           GOVOPLAN_RELEASE_SSH_KEY_B64: ${{ secrets.GOVOPLAN_RELEASE_SSH_KEY_B64 }}
@@ -37,8 +40,8 @@ jobs:
           chmod 600 ~/.ssh/known_hosts
       - name: Bootstrap GovOPlaN repositories
         working-directory: govoplan
-        run: python tools/repo/bootstrap-repositories.py --parent ..
-      - name: Run security audit
+        run: python tools/repo/bootstrap-repositories.py --parent .. --transport public-https
+      - name: Run whole-system security audit
         working-directory: govoplan
         run: tools/checks/security-audit/run.sh --mode "$SECURITY_AUDIT_MODE" --scope "$SECURITY_AUDIT_SCOPE" --reports-dir audit-reports
       - name: Upload audit reports