Bump apollo-server from 2.19.0 to 2.25.3 in /server

Bumps [apollo-server](https://github.com/apollographql/apollo-server/tree/HEAD/packages/apollo-server) from 2.19.0 to 2.25.3.
- [Release notes](https://github.com/apollographql/apollo-server/releases)
- [Changelog](https://github.com/apollographql/apollo-server/blob/main/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-server/commits/apollo-server@2.25.3/packages/apollo-server)

---
updated-dependencies:
- dependency-name: apollo-server
  dependency-type: direct:production
...

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

server/package.json

@@ -8,7 +8,7 @@
   },
   "dependencies": {
     "@prisma/client": "^2.12.1",
-    "apollo-server": "^2.19.0",
+    "apollo-server": "^2.25.3",
     "bcryptjs": "2.4.3",
     "jsonwebtoken": "8.5.1"
   },