(docs deps): Bump remark-lint-heading-increment from 3.1.1 to 3.1.2

Bumps [remark-lint-heading-increment](https://github.com/remarkjs/remark-lint/tree/HEAD/packages/remark-lint-heading-increment) from 3.1.1 to 3.1.2.
- [Release notes](https://github.com/remarkjs/remark-lint/releases)
- [Changelog](https://github.com/remarkjs/remark-lint/blob/main/changelog.md)
- [Commits](https://github.com/remarkjs/remark-lint/commits/HEAD/packages/remark-lint-heading-increment)

---
updated-dependencies:
- dependency-name: remark-lint-heading-increment
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -46,7 +46,7 @@
     "remark-lint-final-definition": "^3.1.1",
     "remark-lint-final-newline": "^2.1.1",
     "remark-lint-hard-break-spaces": "^3.1.2",
-    "remark-lint-heading-increment": "^3.1.1",
+    "remark-lint-heading-increment": "^3.1.2",
     "remark-lint-heading-style": "^3.1.2",
     "remark-lint-heading-whitespace": "^1.0.0",
     "remark-lint-link-title-style": "^3.1.1",