Bump express-static-gzip from 2.1.7 to 2.1.8

Bumps [express-static-gzip](https://github.com/tkoenig89/express-static-gzip) from 2.1.7 to 2.1.8.
- [Release notes](https://github.com/tkoenig89/express-static-gzip/releases)
- [Commits](tkoenig89/express-static-gzip@v2.1.7...v2.1.8)

---
updated-dependencies:
- dependency-name: express-static-gzip
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -217,7 +217,7 @@
     "eslint-plugin-rxjs": "^5.0.3",
     "eslint-plugin-simple-import-sort": "^10.0.0",
     "eslint-plugin-unused-imports": "^3.2.0",
-    "express-static-gzip": "^2.1.7",
+    "express-static-gzip": "^2.1.8",
     "jasmine": "^3.8.0",
     "jasmine-core": "^3.8.0",
     "jasmine-marbles": "0.9.2",