fix: upgrade @loopback/repository from 7.0.9 to 7.0.12

Snyk has created this PR to upgrade @loopback/repository from 7.0.9 to 7.0.12.

See this package in npm:
@loopback/repository

See this project in Snyk:
https://app.snyk.io/org/ashishkaushik/project/c84587c4-341d-494f-8c63-86e693b04f4b?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -52,7 +52,7 @@
   "dependencies": {
     "@loopback/boot": "^7.0.9",
     "@loopback/core": "^6.1.6",
-    "@loopback/repository": "^7.0.9",
+    "@loopback/repository": "^7.0.12",
     "@loopback/rest": "^14.0.9",
     "@loopback/rest-explorer": "^7.0.9",
     "@sourceloop/core": "^15.0.1",