chore(deps): Update docker/build-push-action action to v6.15.0 (#848)

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

Author: renovate[bot]

.github/workflows/build-image-test.yaml

@@ -61,7 +61,7 @@ jobs:
 
     - name: Build if Dockerfile changed
       if: steps.changed-files-specific.outputs.any_changed == 'true'
-      uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991  # v6.13.0
+      uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4  # v6.15.0
       with:
         context: .
         build-args: |
@@ -112,7 +112,7 @@ jobs:
       if: >-
         steps.changed-files-specific.outputs.any_changed == 'true'
         && matrix.os == 'ubuntu-latest'
-      uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991  # v6.13.0
+      uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4  # v6.15.0
       with:
         context: .
         build-args: |

.github/workflows/build-image.yaml

@@ -47,7 +47,7 @@ jobs:
 
     - name: Build and Push release
       if: github.event_name != 'schedule'
-      uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991  # v6.13.0
+      uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4  # v6.15.0
       with:
         context: .
         build-args: |
@@ -64,7 +64,7 @@ jobs:
 
     - name: Build and Push nightly
       if: github.event_name == 'schedule'
-      uses: docker/build-push-action@ca877d9245402d1537745e0e356eab47c3520991  # v6.13.0
+      uses: docker/build-push-action@471d1dc4e07e5cdedd4c2171150001c434f0b7a4  # v6.15.0
       with:
         context: .
         build-args: |