chore(deps): bump docker/setup-buildx-action from 1 to 2

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 1 to 2.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v1...v2)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/master.yml

@@ -18,7 +18,7 @@ jobs:
         images: solidnerd/bookstack-dev
         tag-sha: true
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
+      uses: docker/setup-buildx-action@v2
     - name: Build Image
       uses: docker/build-push-action@v2
       with:
@@ -80,7 +80,7 @@ jobs:
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v1
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
+      uses: docker/setup-buildx-action@v2
     - name: Login to DockerHub
       if: github.event_name != 'pull_request'
       uses: docker/login-action@v1

.github/workflows/pr.yml

@@ -18,7 +18,7 @@ jobs:
         images: solidnerd/bookstack-dev
         tag-sha: true
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
+      uses: docker/setup-buildx-action@v2
     - name: Build and push Dev
       uses: docker/build-push-action@v2
       with:

.github/workflows/release.yml

@@ -18,7 +18,7 @@ jobs:
         images: solidnerd/bookstack-dev
         tag-sha: true
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
+      uses: docker/setup-buildx-action@v2
     - name: Build and push Dev
       uses: docker/build-push-action@v2
       with:
@@ -78,7 +78,7 @@ jobs:
     - name: Set up QEMU
       uses: docker/setup-qemu-action@v1
     - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v1
+      uses: docker/setup-buildx-action@v2
     - name: Login to DockerHub
       if: github.event_name != 'pull_request'
       uses: docker/login-action@v1