couple ci fixes

- upload stubs as `.tar.gz` instead of `.zip`
- append recursive flag only when the source ends with a backslash

.github/actions/upload_aws/action.yml

@@ -24,7 +24,8 @@ runs:
         (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'rerequested'))
       run: >-
         [ -z "$AWS_ACCESS_KEY_ID" ] ||
-        aws s3 cp ${{ inputs.source }} s3://adafruit-circuit-python/bin/${{ inputs.destination }} --recursive --no-progress --region us-east-1
+        aws s3 cp ${{ inputs.source }} s3://adafruit-circuit-python/bin/${{ inputs.destination }}
+        ${{ endsWith(inputs.source, '/') && '--recursive' || '' }} --no-progress --region us-east-1
       env:
         AWS_PAGER: ''
         AWS_ACCESS_KEY_ID: ${{ inputs.AWS_ACCESS_KEY_ID }}

.github/workflows/build.yml

@@ -200,16 +200,11 @@ jobs:
       with:
         name: docs
         path: _build/latex
-    - name: Zip stubs
-      if: >-
-        (github.event_name == 'push' && github.ref == 'refs/heads/main' && github.repository_owner == 'adafruit') ||
-        (github.event_name == 'release' && (github.event.action == 'published' || github.event.action == 'rerequested'))
-      run: zip -9r circuitpython-stubs.zip circuitpython-stubs
     - name: Upload to S3
       uses: ./.github/actions/upload_aws
       with:
         source: circuitpython-stubs/dist/*.tar.gz
-        destination: stubs/circuitpython-stubs-${{ env.CP_VERSION }}.zip
+        destination: stubs/circuitpython-stubs-${{ env.CP_VERSION }}.tar.gz
         AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
         AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
     - name: Upload stubs to PyPi