Update dependency ts-loader to v8.4.0

Author: renovate-bot

backend/package.json

@@ -65,7 +65,7 @@
     "supertest": "6.1.3",
     "swagger-parser": "10.0.2",
     "ts-jest": "26.5.5",
-    "ts-loader": "8.1.0",
+    "ts-loader": "8.4.0",
     "ts-node": "9.1.1",
     "tsconfig-paths": "3.9.0",
     "tslint": "6.1.3",

backend/yarn.lock

@@ -5747,10 +5747,10 @@ [email protected]:
     semver "7.x"
     yargs-parser "20.x"
 
-ts-loader@8.1.0:
-  version "8.1.0"
-  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-8.1.0.tgz#d6292487df279c7cc79b6d3b70bb9d31682b693e"
-  integrity sha512-YiQipGGAFj2zBfqLhp28yUvPP9jUGqHxRzrGYuc82Z2wM27YIHbElXiaZDc93c3x0mz4zvBmS6q/DgExpdj37A==
+ts-loader@8.4.0:
+  version "8.4.0"
+  resolved "https://registry.yarnpkg.com/ts-loader/-/ts-loader-8.4.0.tgz#e845ea0f38d140bdc3d7d60293ca18d12ff2720f"
+  integrity sha512-6nFY3IZ2//mrPc+ImY3hNWx1vCHyEhl6V+wLmL4CZcm6g1CqX7UKrkc6y0i4FwcfOhxyMPCfaEvh20f4r9GNpw==
   dependencies:
     chalk "^4.1.0"
     enhanced-resolve "^4.0.0"