Update dependency forgejo-lxc to v12

.forgejo/workflows/integration-action.yml

@@ -10,7 +10,7 @@ on:
 #
 jobs:
   integration-action:
-    runs-on: self-hosted
+    runs-on: lxc-bookworm
     steps:
       - uses: actions/checkout@v3
       - name: forgejo.sh & forgejo-runner.sh

.forgejo/workflows/integration-scripts.yml

@@ -7,7 +7,7 @@ on:
 
 jobs:
   integration:
-    runs-on: self-hosted
+    runs-on: lxc-bookworm
     strategy:
       matrix:
         info:
@@ -33,7 +33,7 @@ jobs:
           forgejo-test-helper.sh run_workflow testdata/ipv6 $url root ipv6 setup-forgejo $token
 
   binary:
-    runs-on: self-hosted
+    runs-on: lxc-bookworm
     strategy:
       matrix:
         - binary: https://codeberg.org/forgejo/forgejo/releases/download/v1.21.2-1/forgejo-1.21.2-1-linux-amd64