chore(deps): bump prettier

Bumps the npm-dependencies group with 1 update in the /actions/helm/generate-docs directory: [prettier](https://github.com/prettier/prettier).


Updates `prettier` from 3.7.4 to 3.8.0
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.7.4...3.8.0)

---
updated-dependencies:
- dependency-name: prettier
  dependency-version: 3.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: npm-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

actions/helm/generate-docs/package-lock.json

@@ -2,7 +2,7 @@
   "dependencies": {
     "@textlint/textlint-plugin-markdown": "^15.5.0",
     "markdownlint-cli2": "^0.20.0",
-    "prettier": "^3.7.4",
+    "prettier": "^3.8.0",
     "textlint": "^15.5.0",
     "textlint-filter-rule-comments": "^1.3.0",
     "textlint-rule-terminology": "^5.2.16"