Lock in at a major version of actions/upload-artifact to prevent potential future breaks

Author: JamesMGreene

action.yml

@@ -69,7 +69,7 @@ runs:
         INPUT_PATH: ${{ inputs.path }}
 
     - name: Upload artifact
-      uses: actions/upload-artifact@main
+      uses: actions/upload-artifact@v3
       with:
         name: ${{ inputs.name }}
         path: ${{ runner.temp }}/artifact.tar