test pypi workflow (#96)

- updating test pypi workflow

.github/workflows/build_and_publish_to_test_pypi.yml

@@ -8,9 +8,27 @@ on:
     branches: [ main ]
 
 jobs:
+  check-source-changes:
+    runs-on: ubuntu-latest
+    outputs:
+      run_job: ${{ steps.changed-files.outputs.any_changed }}
+    steps:
+      - name: Checkout Sourcecode
+        uses: actions/checkout@v4
+
+      - name: Check for changes in setup.py/cfg
+        id: changed-files
+        uses: tj-actions/[email protected]
+        with:
+          files: |
+            setup.py
+            setup.cfg
+
   build-n-publish-test-pypi:
-    name: Build and Publish
+    name: Build and Publish To Test PyPi
     runs-on: ubuntu-latest
+    needs: check-source-changes
+    if: needs.check-source-changes.outputs.run_job == 'true'
 
     steps:
       - uses: actions/checkout@v4