ci: only mirror if secret is available (#12181)

* ci: only mirror if secret is available

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

* fix unrelated issues

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

---------

Signed-off-by: Jens Langhammer <jens@goauthentik.io>

.github/workflows/repo-mirror.yml

@@ -4,14 +4,18 @@ on: [push, delete]
 
 jobs:
   to_internal:
+    if: ${{ github.repository != 'goauthentik/authentik-internal' }}
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - uses: pixta-dev/repository-mirroring-action@v1
+      - if: ${{ env.MIRROR_KEY != '' }}
+        uses: pixta-dev/repository-mirroring-action@v1
         with:
           target_repo_url:
             git@github.com:goauthentik/authentik-internal.git
           ssh_private_key:
             ${{ secrets.GH_MIRROR_KEY }}
+        env:
+          MIRROR_KEY: ${{ secrets.GH_MIRROR_KEY }}