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-AXIOS-9292519

backend/package-lock.json

@@ -102,7 +102,7 @@
         "pino": "^8.16.2",
         "pkcs11js": "^2.1.6",
         "pkijs": "^3.2.4",
-        "posthog-node": "^3.6.2",
+        "posthog-node": "^4.11.2",
         "probot": "^13.3.8",
         "safe-regex": "^2.1.1",
         "scim-patch": "^0.8.3",
@@ -11435,9 +11435,9 @@
       }
     },
     "node_modules/axios": {
-      "version": "1.7.9",
-      "resolved": "https://registry.npmjs.org/axios/-/axios-1.7.9.tgz",
-      "integrity": "sha512-LhLcE7Hbiryz8oMDdDptSrWowmB4Bl6RCt6sIJKpRB4XtVf0iEgewX3au/pJqm+Py1kCASkb/FFKjxQaLtxJvw==",
+      "version": "1.8.4",
+      "resolved": "https://registry.npmjs.org/axios/-/axios-1.8.4.tgz",
+      "integrity": "sha512-eBSYY4Y68NNlHbHBMdeDmKNtDgXWhQsJcGqzO3iLUM0GraQFSS9cVgPX5I9b3lbdFKyYoAEGAZF1DwhTaljNAw==",
       "license": "MIT",
       "dependencies": {
         "follow-redirects": "^1.15.6",
@@ -18953,12 +18953,12 @@
       "dev": true
     },
     "node_modules/posthog-node": {
-      "version": "3.6.2",
-      "resolved": "https://registry.npmjs.org/posthog-node/-/posthog-node-3.6.2.tgz",
-      "integrity": "sha512-tVIaShR3SxBx17AlAUS86jQTweKuJIFRedBB504fCz7YPnXJTYSrVcUHn5IINE2wu4jUQimQK6ihQr90Djrdrg==",
+      "version": "4.11.2",
+      "resolved": "https://registry.npmjs.org/posthog-node/-/posthog-node-4.11.2.tgz",
+      "integrity": "sha512-zzXCzatMyXcDdvcSJFoCV1lA+5LkT2f7dt1vj6I4S6QGUWlRMMu8krApseUY4/E8m2rhQlmR8BZU/2xXcgS7XQ==",
+      "license": "MIT",
       "dependencies": {
-        "axios": "^1.6.2",
-        "rusha": "^0.8.14"
+        "axios": "^1.8.2"
       },
       "engines": {
         "node": ">=15.0.0"
@@ -19961,11 +19961,6 @@
         "queue-microtask": "^1.2.2"
       }
     },
-    "node_modules/rusha": {
-      "version": "0.8.14",
-      "resolved": "https://registry.npmjs.org/rusha/-/rusha-0.8.14.tgz",
-      "integrity": "sha512-cLgakCUf6PedEu15t8kbsjnwIFFR2D4RfL+W3iWFJ4iac7z4B0ZI8fxy4R3J956kAI68HclCFGL8MPoUVC3qVA=="
-    },
     "node_modules/safe-array-concat": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/safe-array-concat/-/safe-array-concat-1.0.1.tgz",

backend/package.json

@@ -219,7 +219,7 @@
     "pino": "^8.16.2",
     "pkcs11js": "^2.1.6",
     "pkijs": "^3.2.4",
-    "posthog-node": "^3.6.2",
+    "posthog-node": "^4.11.2",
     "probot": "^13.3.8",
     "safe-regex": "^2.1.1",
     "scim-patch": "^0.8.3",