fix(kobo): support GET request on analytics gettests endpoint

Kobo devices send GET requests to /v1/analytics/gettests during sync checks. Previously only POST was handled, causing 404 errors during subsequent syncs.

Closes #697

server/test/e2e/authorization-matrix/route-inventory/manifest.json

@@ -1,7 +1,7 @@
 {
-  "totalRoutes": 367,
+  "totalRoutes": 368,
   "byPermission": {
-    "(none)": 164,
+    "(none)": 165,
     "Permission.ManageMetadataConfig": 32,
     "Permission.EmailSend": 30,
     "Permission.LibraryEditMetadata": 31,

server/test/e2e/authorization-matrix/route-inventory/routes-04.json

@@ -195,6 +195,18 @@
     "file": "server/src/modules/kobo/kobo-device.controller.ts",
     "className": "KoboDeviceController",
     "methodName": "getTests",
+    "httpMethod": "GET",
+    "path": "/kobo/:deviceToken/v1/analytics/gettests",
+    "permissions": [],
+    "libraryAccess": [],
+    "isPublic": true,
+    "allowDefault": false,
+    "useGuards": ["KoboTokenGuard"]
+  },
+  {
+    "file": "server/src/modules/kobo/kobo-device.controller.ts",
+    "className": "KoboDeviceController",
+    "methodName": "postGetTests",
     "httpMethod": "POST",
     "path": "/kobo/:deviceToken/v1/analytics/gettests",
     "permissions": [],