fix: backend/package.json & backend/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-MONGOOSE-5777721

backend/package-lock.json

@@ -38,7 +38,7 @@
         "jsrp": "^0.2.4",
         "libsodium-wrappers": "^0.7.10",
         "lodash": "^4.17.21",
-        "mongoose": "^6.10.5",
+        "mongoose": "^6.11.3",
         "nanoid": "^3.3.6",
         "node-cache": "^5.1.2",
         "nodemailer": "^6.8.0",
@@ -8391,9 +8391,9 @@
       }
     },
     "node_modules/mongoose": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-6.11.1.tgz",
-      "integrity": "sha512-AvQ8C5ZGF6GcsQhoRg/i7pbNZpb96qLGU5ICBllckp7qMOxcfUF1nA6JstZw841BqRcE6myZ/mx9CluEESaw5Q==",
+      "version": "6.11.3",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-6.11.3.tgz",
+      "integrity": "sha512-M1Y5PjttgV51YDa30u7GVMVypQSlNZF/jUhlzTBAmaz5C9FvOr8eih/VLhhO7xtTSlcVTFQS1dqlQNMbtfUowQ==",
       "dependencies": {
         "bson": "^4.7.2",
         "kareem": "2.5.1",
@@ -20832,9 +20832,9 @@
       }
     },
     "mongoose": {
-      "version": "6.11.1",
-      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-6.11.1.tgz",
-      "integrity": "sha512-AvQ8C5ZGF6GcsQhoRg/i7pbNZpb96qLGU5ICBllckp7qMOxcfUF1nA6JstZw841BqRcE6myZ/mx9CluEESaw5Q==",
+      "version": "6.11.3",
+      "resolved": "https://registry.npmjs.org/mongoose/-/mongoose-6.11.3.tgz",
+      "integrity": "sha512-M1Y5PjttgV51YDa30u7GVMVypQSlNZF/jUhlzTBAmaz5C9FvOr8eih/VLhhO7xtTSlcVTFQS1dqlQNMbtfUowQ==",
       "requires": {
         "bson": "^4.7.2",
         "kareem": "2.5.1",

backend/package.json

@@ -29,7 +29,7 @@
     "jsrp": "^0.2.4",
     "libsodium-wrappers": "^0.7.10",
     "lodash": "^4.17.21",
-    "mongoose": "^6.10.5",
+    "mongoose": "^6.11.3",
     "nanoid": "^3.3.6",
     "node-cache": "^5.1.2",
     "nodemailer": "^6.8.0",