Bump typescript from 3.9.5 to 3.9.7 in /server

Bumps [typescript](https://github.com/Microsoft/TypeScript) from 3.9.5 to 3.9.7.
- [Release notes](https://github.com/Microsoft/TypeScript/releases)
- [Commits](https://github.com/Microsoft/TypeScript/compare/v3.9.5...v3.9.7)

Signed-off-by: dependabot[bot] <support@github.com>

server/package-lock.json

@@ -7045,9 +7045,9 @@
       }
     },
     "typescript": {
-      "version": "3.9.5",
-      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.5.tgz",
-      "integrity": "sha512-hSAifV3k+i6lEoCJ2k6R2Z/rp/H3+8sdmcn5NrS3/3kE7+RyZXm9aqvxWqjEXHAd8b0pShatpcdMTvEdvAJltQ==",
+      "version": "3.9.7",
+      "resolved": "https://registry.npmjs.org/typescript/-/typescript-3.9.7.tgz",
+      "integrity": "sha512-BLbiRkiBzAwsjut4x/dsibSTB6yWpwT5qWmC2OfuCg3GgVQCSgMs4vEctYPhsaGtd0AeuuHMkjZ2h2WG8MSzRw==",
       "dev": true
     },
     "undefsafe": {

server/package.json

@@ -37,7 +37,7 @@
     "supertest": "^4.0.2",
     "ts-jest": "24.3.0",
     "ts-node": "^8.10.2",
-    "typescript": "^3.9.5"
+    "typescript": "^3.9.7"
   },
   "repository": {
     "type": "git",