fix(deps): update dependency dotenv to ^16.4.6

Author: renovate[bot]

backend/package.json

@@ -17,7 +17,7 @@
     "body-parser": "^1.20.1",
     "cookie-parser": "^1.4.6",
     "cors": "^2.8.5",
-    "dotenv": "^16.0.3",
+    "dotenv": "^16.4.6",
     "express": "^4.18.2",
     "jsonwebtoken": "^9.0.0",
     "memory-cache": "^0.2.0",

package.json

@@ -56,7 +56,7 @@
     "@polkadot/util": "10.4.2",
     "@polkadot/util-crypto": "10.4.2",
     "@types/valid-url": "^1.0.7",
-    "dotenv": "^16.0.3",
+    "dotenv": "^16.4.6",
     "ts-node": "^10.9.2",
     "valid-url": "^1.0.9"
   },

yarn.lock

@@ -6754,10 +6754,10 @@ __metadata:
   languageName: node
   linkType: hard
 
-"dotenv@npm:^16.0.3":
-  version: 16.3.1
-  resolution: "dotenv@npm:16.3.1"
-  checksum: 15d75e7279018f4bafd0ee9706593dd14455ddb71b3bcba9c52574460b7ccaf67d5cf8b2c08a5af1a9da6db36c956a04a1192b101ee102a3e0cf8817bbcf3dfd
+"dotenv@npm:^16.4.6":
+  version: 16.4.6
+  resolution: "dotenv@npm:16.4.6"
+  checksum: d29510d8716a2ca906ebb2d21dd5ee2e2b0af9e66ccb85a0c989022e16b82b8816887e14930a940fb0107d4da4aa8aad9c32c587d3052b900046e267725a4946
   languageName: node
   linkType: hard
 
@@ -15282,7 +15282,7 @@ __metadata:
     body-parser: ^1.20.1
     cookie-parser: ^1.4.6
     cors: ^2.8.5
-    dotenv: ^16.0.3
+    dotenv: ^16.4.6
     express: ^4.18.2
     jsonwebtoken: ^9.0.0
     memory-cache: ^0.2.0
@@ -15329,7 +15329,7 @@ __metadata:
     "@typescript-eslint/eslint-plugin": ^5.62.0
     "@typescript-eslint/parser": ^5.62.0
     concurrently: ^8.2.2
-    dotenv: ^16.0.3
+    dotenv: ^16.4.6
     eslint: ">=8.31.0"
     eslint-config-prettier: ^8.10.0
     eslint-plugin-import: ^2.29.1