Merge pull request #157 from beeware/dependabot/github_actions/docker…

…/setup-buildx-action-3.6.1

Bump docker/setup-buildx-action from 3.5.0 to 3.6.1

.github/workflows/app-build-verify.yml

@@ -259,7 +259,7 @@ jobs:
         startsWith(inputs.runner-os, 'ubuntu')
         && contains(fromJSON('["", "Linux"]'), inputs.target-platform)
         && contains(fromJSON('["", "system", "appimage"]'), inputs.target-format)
-      uses: docker/setup-buildx-action@v3.5.0
+      uses: docker/setup-buildx-action@v3.6.1
 
     - name: Docker Caching Configuration
       id: docker