ci: fix artifact and image runner

.gitea/workflows/build_and_test.yml

@@ -15,7 +15,7 @@ jobs:
         run: just test
 
       - name: Archive test report
-        uses: actions/upload-artifact@v3
+        uses: christopherhx/gitea-upload-artifact@v4
         with:
           name: test_logs
           path: build/meson-logs
@@ -35,7 +35,7 @@ jobs:
         run: tar -czf build/coverage.tar.gz build/meson-logs/coveragereport
 
       - name: Archive coverage report
-        uses: actions/upload-artifact@v3
+        uses: christopherhx/gitea-upload-artifact@v4
         with:
           name: coverage_report
           path: build/meson-logs/coveragereport

.gitea/workflows/build_docs.yml

@@ -20,7 +20,7 @@ jobs:
         run: just docs
 
       - name: Archive docs
-        uses: actions/upload-artifact@v3
+        uses: christopherhx/gitea-upload-artifact@v3
         with:
           name: docs
           path: build/docs

.gitea/workflows/build_image.yml

@@ -9,7 +9,7 @@ on:
 
 jobs:
   build-dev-image:
-    runs-on: ubuntu-latest
+    runs-on: garm-k8s
     steps:
       - name: Check out repository code
         uses: actions/checkout@v4