fix: packaging fix

Author: tillt

.github/workflows/update-packaging.yml

@@ -16,7 +16,8 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: ${{ github.event.repository.default_branch }}
+          # Always base packaging changes on the default branch (main), not the tag name.
+          ref: main
 
       - name: Determine tag
         id: vars
@@ -83,4 +84,4 @@ jobs:
             - Update Homebrew formula URL/SHA to ${{ steps.vars.outputs.tag }}
             - Update vcpkg overlay REF/SHA512 to ${{ steps.vars.outputs.tag }}
           branch: "bot/update-packaging-${{ steps.vars.outputs.tag }}"
-          base: ${{ github.event.repository.default_branch }}
+          base: main