chore(deps-dev): bump ts-loader from 9.5.2 to 9.5.4 in /backend

Bumps [ts-loader](https://github.com/TypeStrong/ts-loader) from 9.5.2 to 9.5.4.
- [Release notes](https://github.com/TypeStrong/ts-loader/releases)
- [Changelog](https://github.com/TypeStrong/ts-loader/blob/main/CHANGELOG.md)
- [Commits](TypeStrong/ts-loader@v9.5.2...v9.5.4)

---
updated-dependencies:
- dependency-name: ts-loader
  dependency-version: 9.5.4
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

backend/package.json

@@ -98,7 +98,7 @@
         "source-map-support": "^0.5.21",
         "supertest": "^7.1.4",
         "ts-jest": "^29.4.4",
-        "ts-loader": "^9.4.3",
+        "ts-loader": "^9.5.4",
         "ts-node": "^10.9.1",
         "tsconfig-paths": "^4.2.0",
         "typescript": "5.8.3"

backend/yarn.lock

@@ -8612,10 +8612,10 @@ ts-jest@^29.4.4:
     type-fest "^4.41.0"
     yargs-parser "^21.1.1"
 
-ts-loader@^9.4.3:
-  version "9.5.2"
-  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-9.5.2.tgz#1f3d7f4bb709b487aaa260e8f19b301635d08020"
-  integrity sha512-Qo4piXvOTWcMGIgRiuFa6nHNm+54HbYaZCKqc9eeZCLRy3XqafQgwX2F7mofrbJG3g7EEb+lkiR+z2Lic2s3Zw==
+ts-loader@^9.5.4:
+  version "9.5.4"
+  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-9.5.4.tgz#44b571165c10fb5a90744aa5b7e119233c4f4585"
+  integrity sha512-nCz0rEwunlTZiy6rXFByQU1kVVpCIgUpc/psFiKVrUwrizdnIbRFu8w7bxhUF0X613DYwT4XzrZHpVyMe758hQ==
   dependencies:
     chalk "^4.1.0"
     enhanced-resolve "^5.0.0"