chore(deps): bump fantomas from 6.3.11 to 6.3.15 (#627)

Bumps [fantomas](https://github.com/fsprojects/fantomas) from 6.3.11 to 6.3.15.
- [Release notes](https://github.com/fsprojects/fantomas/releases)
- [Changelog](https://github.com/fsprojects/fantomas/blob/main/CHANGELOG.md)
- [Commits](fsprojects/fantomas@v6.3.11...v6.3.15)

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

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

.config/dotnet-tools.json

@@ -3,7 +3,7 @@
   "isRoot": true,
   "tools": {
     "fantomas": {
-      "version": "6.3.11",
+      "version": "6.3.15",
       "commands": [
         "fantomas"
       ]