GH-44373: [Packaging][Java] Fix brew link to Python 3.13 on macOS (#44374)

### Rationale for this change

Java-jars are currently failing on macOS to install Python 3.13 because `python@ 3.13` (`python` is an alias of `python@ 3.13` now) isn't installed yet. Our link failure workaround is updating already installed `python@*` with `--overwrite` explicitly. `python@ 3.13` (`python`) isn't installed on GitHub Actions runner yet. So `brew bundle` installs `python` without `--overwrite`.

### What changes are included in this PR?

Install `python` with `--overwrite` explicitly before `brew bundle`.

### Are these changes tested?

Via CI

### Are there any user-facing changes?

No
* GitHub Issue: #44373

Lead-authored-by: Sutou Kouhei <[email protected]>
Co-authored-by: Raúl Cumplido <[email protected]>
Signed-off-by: Sutou Kouhei <[email protected]>

Author: raulcd

dev/tasks/java-jars/github.yml

@@ -117,6 +117,7 @@ jobs:
           for python_package in $(brew list | grep python@); do
             brew install --overwrite ${python_package}
           done
+          brew install --overwrite python
 
           brew bundle --file=arrow/cpp/Brewfile
           # We want to link aws-sdk-cpp statically but Homebrew's