Attempt to fix file basename problem in actions

.github/workflows/ubuntu.yml

@@ -17,7 +17,7 @@ jobs:
           OF_ARCHIVE_NAME=$(basename -- "$OF_URL")
           tar -xf ${OF_ARCHIVE_NAME}
           rm ${OF_ARCHIVE_NAME}
-          OF_EXTRACT_NAME="${OF_ARCHIVE_NAME%%.*}"
+          OF_EXTRACT_NAME=$(basename ${OF_ARCHIVE_NAME} .tar.gz)
           mv ${OF_EXTRACT_NAME} openFrameworks
       - run: mv .ofxPiMapper openFrameworks/addons/ofxPiMapper
       - run: |