build(deps): bump docker/setup-qemu-action from 3 to 4

Bumps [docker/setup-qemu-action](https://github.com/docker/setup-qemu-action) from 3 to 4.
- [Release notes](https://github.com/docker/setup-qemu-action/releases)
- [Commits](docker/setup-qemu-action@v3...v4)

---
updated-dependencies:
- dependency-name: docker/setup-qemu-action
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/build-and-cache-libpq.yml

@@ -68,7 +68,7 @@ jobs:
 
       - name: Set up QEMU for multi-arch build
         # Check https://github.com/docker/setup-qemu-action for newer versions.
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v4
         with:
           # https://github.com/pypa/cibuildwheel/discussions/2256
           image: tonistiigi/binfmt:qemu-v8.1.5

.github/workflows/packages.yml

@@ -83,7 +83,7 @@ jobs:
         uses: actions/checkout@v6
 
       - name: Set up QEMU for multi-arch build
-        uses: docker/setup-qemu-action@v3
+        uses: docker/setup-qemu-action@v4
 
       - name: Cache libpq build
         uses: actions/cache@v5