Update docker/setup-buildx-action action to v3.12.0 (#4501)

| datasource  | package                    | from    | to      |
| ----------- | -------------------------- | ------- | ------- |
| github-tags | docker/setup-buildx-action | v3.11.1 | v3.12.0 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/build.yml

@@ -60,7 +60,7 @@ jobs:
           path: ${{ github.workspace }}/dist
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
         with:
           driver-opts: network=host
 

.github/workflows/conformance.yml

@@ -74,7 +74,7 @@ jobs:
         run: echo "GOPATH=$(go env GOPATH)" >> $GITHUB_ENV
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: NGF Docker meta
         id: ngf-meta

.github/workflows/functional.yml

@@ -56,7 +56,7 @@ jobs:
         run: echo "GOPATH=$(go env GOPATH)" >> $GITHUB_ENV
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: NGF Docker meta
         id: ngf-meta

.github/workflows/helm.yml

@@ -35,7 +35,7 @@ jobs:
           path: ${{ github.workspace }}/dist
 
       - name: Docker Buildx
-        uses: docker/setup-buildx-action@e468171a9de216ec08956ac3ada2f0791b6bd435 # v3.11.1
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f # v3.12.0
 
       - name: NGF Docker meta
         id: ngf-meta