fix(deps): bump sharp from 0.31.0 to 0.31.2 (#665)

Bumps [sharp](https://github.com/lovell/sharp) from 0.31.0 to 0.31.2.
- [Release notes](https://github.com/lovell/sharp/releases)
- [Changelog](https://github.com/lovell/sharp/blob/main/docs/changelog.md)
- [Commits](https://github.com/lovell/sharp/compare/v0.31.0...v0.31.2)

---
updated-dependencies:
- dependency-name: sharp
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -38,7 +38,7 @@
     "pbf": "3.2.1",
     "proj4": "2.8.0",
     "request": "2.88.2",
-    "sharp": "0.31.0",
+    "sharp": "0.31.2",
     "tileserver-gl-styles": "2.0.0",
     "sanitize-filename": "1.6.3"
   },