ci/macos: fix possible issue during brew install

```
Error: The `brew link` step did not complete successfully
The formula built, but is not symlinked into /opt/homebrew
Could not symlink bin/pkg-config
Target /opt/homebrew/bin/pkg-config
is a symlink belonging to [email protected]. You can unlink it:
  brew unlink [email protected]

To force the link and overwrite all conflicting files:
  brew link --overwrite pkgconf

To list all files that would be deleted:
  brew link --overwrite pkgconf --dry-run

Possible conflicting files are:
/opt/homebrew/bin/pkg-config -> /opt/homebrew/Cellar/[email protected]/0.29.2_3/bin/pkg-config
/opt/homebrew/share/aclocal/pkg.m4 -> /opt/homebrew/Cellar/[email protected]/0.29.2_3/share/aclocal/pkg.m4
/opt/homebrew/share/man/man1/pkg-config.1 -> /opt/homebrew/Cellar/[email protected]/0.29.2_3/share/man/man1/pkg-config.1
```

This only happen with AMD64 runners, and when using the latest runner images
(e.g. when the luck of the draw yields 14.7.1 23H222 and not 14.7 23H124).

.github/workflows/build.yml

@@ -87,7 +87,7 @@ jobs:
           # Remove some installed packages to prevent brew
           # from attempting (and failing) to upgrade them.
           brew uninstall gradle maven
-          brew install --formula --quiet "${packages[@]}"
+          brew install --formula --overwrite --quiet "${packages[@]}"
 
       - name: Update PATH
         run: >