@tus/server: upgrade srvx & remove temporary fix

Author: Murderlon

package-lock.json

@@ -25,7 +25,7 @@
     "debug": "^4.3.4",
     "lodash.throttle": "^4.1.1",
     "set-cookie-parser": "^2.7.1",
-    "srvx": "^0.2.7"
+    "srvx": "^0.2.8"
   },
   "devDependencies": {
     "@types/debug": "^4.1.12",

packages/server/package.json

@@ -134,19 +134,6 @@ export class Server extends EventEmitter {
     const context = this.createContext()
     const headers = new Headers()
 
-    // @ts-expect-error temporary until https://github.com/unjs/srvx/issues/44 is fixed
-    req.headers.get = (key: string) => {
-      for (const [k, v] of req.headers.entries()) {
-        if (k === key) {
-          if (v === '') {
-            return null
-          }
-          return v
-        }
-      }
-      return null
-    }
-
     const onError = async (error: {
       status_code?: number
       body?: string