chore: support both GITHUB_TOKEN and GITEA_TOKEN in do-release workflow

.gitea/workflows/do-release.yml

@@ -28,7 +28,7 @@ jobs:
       run:
         shell: bash
     env:
-      RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      RELEASE_TOKEN: ${{ secrets.GITHUB_TOKEN || secrets.GITEA_TOKEN }}
       SUMMARY_FILE: ${{ runner.temp }}/do-release-summary.md
     steps:
       - name: Checkout tagged revision
@@ -56,7 +56,7 @@ jobs:
         id: publish
         uses: ./publish
         with:
-          token: ${{ secrets.GITHUB_TOKEN }}
+          token: ${{ secrets.GITHUB_TOKEN || secrets.GITEA_TOKEN }}
           version: ${{ inputs.tag }}
 
       - name: Build release binaries