Fix warnings

mock/mockEndepunkter.ts

@@ -1,13 +1,13 @@
-import express from "express";
+import express, { RequestHandler } from "express";
 
 import mockFastlegerest from "./mockFastlegerest";
 import mockModiacontextholder from "./mockModiacontextholder";
 import mockSyfoperson from "./mockSyfoperson";
 import mockIstilgangskontroll from "./mockIstilgangskontroll";
 
 const mockEndepunkter = (server: express.Application) => {
-  server.use(express.json());
-  server.use(express.urlencoded());
+  server.use(express.json() as RequestHandler);
+  server.use(express.urlencoded() as RequestHandler);
 
   [
     mockFastlegerest,

server.ts

@@ -1,4 +1,4 @@
-import express from "express";
+import express, { RequestHandler } from "express";
 import path from "path";
 import prometheus from "prom-client";
 
@@ -12,7 +12,7 @@ const collectDefaultMetrics = prometheus.collectDefaultMetrics;
 collectDefaultMetrics({});
 
 const server = express();
-server.use(express.json());
+server.use(express.json() as RequestHandler);
 
 const nocache = (
   req: express.Request,