Bump scalameta/scalafmt from v3.6.1 to v3.7.3

Bumps scalameta/scalafmt from v3.6.1 to v3.7.3.

---
updated-dependencies:
- dependency-name: scalameta/scalafmt
  dependency-type: direct:production
...

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

Dockerfile

@@ -22,7 +22,7 @@ FROM koalaman/shellcheck:v0.9.0 as shellcheck
 FROM mstruebing/editorconfig-checker:2.4.0 as editorconfig-checker
 FROM mvdan/shfmt:v3.6.0 as shfmt
 FROM rhysd/actionlint:1.6.24 as actionlint
-FROM scalameta/scalafmt:v3.6.1 as scalafmt
+FROM scalameta/scalafmt:v3.7.3 as scalafmt
 FROM yoheimuta/protolint:0.43.1 as protolint
 FROM zricethezav/gitleaks:v8.16.2 as gitleaks