chore: split jobs

Signed-off-by: Ben Meier <ben.meier@humanitec.com>

Author: astromechza

.github/workflows/ci.yaml

@@ -21,6 +21,10 @@ jobs:
         env:
           GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
 
+  jsonschema:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
       - name: Setup Go
         uses: actions/setup-go@v5
         with: