chore(deps): bump docker/setup-buildx-action from 2 to 3 (kedacore#5030)

Bumps [docker/setup-buildx-action](https://github.com/docker/setup-buildx-action) from 2 to 3.
- [Release notes](https://github.com/docker/setup-buildx-action/releases)
- [Commits](docker/setup-buildx-action@v2...v3)

---
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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Signed-off-by: anton.lysina <[email protected]>

.github/workflows/main-build.yml

@@ -57,7 +57,7 @@ jobs:
           registry: ghcr.io
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Publish on GitHub Container Registry
         run: make publish-multiarch

.github/workflows/release-build.yml

@@ -63,7 +63,7 @@ jobs:
           VERSION: ${{ steps.get_version.outputs.VERSION }}
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
 
       - name: Publish KEDA images on GitHub Container Registry
         run: make publish-multiarch