fix(security): normalize request parameters and update dependencies

Signed-off-by: Marc Schäfer <git@marcschaeferger.de>

server/lib/requestParams.ts

@@ -0,0 +1,11 @@
+export function getFirstString(value: unknown): string | undefined {
+    if (typeof value === "string") {
+        return value;
+    }
+
+    if (Array.isArray(value) && typeof value[0] === "string") {
+        return value[0];
+    }
+
+    return undefined;
+}