Bump docker/setup-buildx-action from 3.12.0 to 4.0.0

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 3.12.0 to 4.0.0.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v3.12.0...v4.0.0)

---
updated-dependencies:
- dependency-name: docker/setup-buildx-action
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/master.yml

@@ -17,7 +17,7 @@ jobs:
     - name: Set TAG
       run: grep -F . Tagfile && echo TAG=$(cat Tagfile) >>$GITHUB_ENV
 
-    - uses: docker/setup-buildx-action@v3.12.0
+    - uses: docker/setup-buildx-action@v4.0.0
 
     - name: Log in to GitHub Container Registry
       uses: docker/login-action@v3.7.0

.github/workflows/pr.yml

@@ -124,7 +124,7 @@ jobs:
 
     - uses: actions/checkout@v6
 
-    - uses: docker/setup-buildx-action@v3.12.0
+    - uses: docker/setup-buildx-action@v4.0.0
 
     - name: Log in to GitHub Container Registry
       uses: docker/login-action@v3.7.0