GH-47512: [C++] Bump meson-fmt in pre-commit to 1.9.0

[WillAyd]

Rationale for this change

This improves the readability of parenthesized multi-line expressions in Meson configuration files

What changes are included in this PR?

meson-fmt in pre-commit has been bumped to version 1.9.0, and files have been cleaned accordingly

Are these changes tested?

Yes

Are there any user-facing changes?

No

• GitHub Issue: [C++] Bump meson-fmt version in pre-commit to 1.9.0 #47512

[github-actions]

⚠️ GitHub issue #47512 has been automatically assigned in GitHub to PR creator.

[kou]

+1

[conbench-apache-arrow]

After merging your PR, Conbench analyzed the 4 benchmarking runs that have been run so far on merge-commit c558163.

There weren't enough matching historic benchmark results to make a call on whether there were regressions.

The full Conbench report has more details.

[trim21]

it would nice if you could notice me that the regex for files is wrong...

[kou]

Oh, I thought trim21/pre-commit-mirror-meson@e274126 is an expected change (but we don't need it).

[trim21]

Oh, I thought trim21/pre-commit-mirror-meson@e274126 is an expected change (but we don't need it).

what actually wrong is meson\.format, there is no such file but meson\.options

[kou]

Ah, I didn't notice it.

How about using types: [meson] instead of files: ^(.*/)?(meson\.build|meson\.options)$? If we use types: [meson], we don't need to care about regex.