Add condition to skip release and test release workflows from forks (#31)

* Add condition to skip release and test release workflows from forks

* Add code comment to explain the condition in the GitHub workflows

Co-authored-by: Bruno Alla <browniebroke@users.noreply.github.com>

Author: browniebroke

.github/workflows/release.yml

@@ -19,6 +19,8 @@ jobs:
 
   build:
     name: Build distribution 📦
+    # Prevent this workflow from running on forks
+    if: github.repository == 'django-commons/best-practices'
     runs-on: ubuntu-latest
 
     steps:

.github/workflows/test_release.yml

@@ -27,6 +27,8 @@ jobs:
     # Tag name:
     #   <version>.dev<yyyymmdd><iteration>
     name: Create dev version string
+    # Prevent this workflow from running on forks
+    if: github.repository == 'django-commons/best-practices'
     runs-on: ubuntu-latest
     outputs:
       dev_version: ${{ steps.output-dev-version.outputs.dev_version }}