Merge pull request #564 from thkoch2001/disable_github_actions_on_fork

skip github jobs on forks

.github/workflows/ant-build-pull-request.yaml

@@ -5,6 +5,7 @@ on: pull_request
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: "github.repository == 'yacy/yacy_search_server'
     steps:
     - uses: actions/checkout@master
     - name: Set up JDK 8

.github/workflows/ant-build-selfhosted.yaml

@@ -5,6 +5,7 @@ on: push
 jobs:
   build:
     runs-on: self-hosted
+    if: "github.repository == 'yacy/yacy_search_server'
     steps:
     - uses: actions/checkout@master
     - name: Set up JDK 8