fix: oada/services/auth/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-BRACES-6838727
- https://snyk.io/vuln/SNYK-JS-MICROMATCH-6838728

oada/services/auth/package.json

@@ -64,7 +64,7 @@
     "@oada/error": "^2.0.1",
     "@oada/lib-arangodb": "^3.7.0",
     "@oada/lib-config": "^3.7.0",
-    "@oada/lib-prom": "workspace:^",
+    "@oada/lib-prom": "3.5.1",
     "@oada/lookup": "^2.0.0",
     "@oada/models": "workspace:^",
     "@oada/pino-debug": "^3.7.0",