fix: upgrade @loopback/repository-tests from 0.24.14 to 0.25.0

Snyk has created this PR to upgrade @loopback/repository-tests from 0.24.14 to 0.25.0.

See this package in npm:
@loopback/repository-tests

See this project in Snyk:
https://app.snyk.io/org/ashishkaushik/project/d75c6b83-d6b4-4116-bad1-9cc430b32375?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

services/in-mail-service/package.json

@@ -61,7 +61,7 @@
         "@loopback/metadata": "^7.0.9",
         "@loopback/openapi-v3": "^10.0.9",
         "@loopback/repository": "^7.0.9",
-        "@loopback/repository-tests": "^0.24.9",
+        "@loopback/repository-tests": "^0.25.0",
         "@loopback/rest": "^14.0.9",
         "@sourceloop/core": "^16.0.0",
         "dotenv": "^16.4.5",