security: pin action to full SHA (#118)

Author: corybuecker

.github/workflows/continuous-delivery.yaml

@@ -32,7 +32,7 @@ jobs:
       - run: rake native gem
       - if: ${{ matrix.os == 'ubuntu-latest' }}
         run: gem build
-      - uses: actions/upload-artifact@v7
+      - uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a
         with:
           name: gem-${{ matrix.os }}
           path: |