Bump typedoc from 0.22.13 to 0.22.15

Bumps [typedoc](https://github.com/TypeStrong/TypeDoc) from 0.22.13 to 0.22.15.
- [Release notes](https://github.com/TypeStrong/TypeDoc/releases)
- [Changelog](https://github.com/TypeStrong/typedoc/blob/master/CHANGELOG.md)
- [Commits](https://github.com/TypeStrong/TypeDoc/compare/v0.22.13...v0.22.15)

---
updated-dependencies:
- dependency-name: typedoc
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -77,7 +77,7 @@
     "thenby": "^1.3.4",
     "ts-loader": "^9.2.8",
     "tslib": "^2.3.1",
-    "typedoc": "^0.22.13",
+    "typedoc": "^0.22.15",
     "typescript": "^4.3.5",
     "utils-decorators": "^1.10.4",
     "val-loader": "4.0.0",