release master by default

Author: masklinn

.github/workflows/release.yml

@@ -5,7 +5,6 @@ on:
     inputs:
       tag:
         description: "uap-core ref to release"
-        required: true
         type: string
       environment:
         description: "environment to release for (testpypy or pypy)"
@@ -21,8 +20,9 @@ jobs:
       with:
         submodules: true
         fetch-depth: 0
-    - run: echo "${{ toJSON(inputs) }}"
-    - run: echo "${{ toJSON(github.event) }}"
+    - name: update core
+      # needs to detach because we can update to a tag
+      run: git -C ua-parser-builtins switch --detach ${{ input.tag || 'master' }}
     - name: Set up Python
       uses: actions/setup-python@v5
       with: