fix: add missing await

Author: sakkke

src/proxy.ts

@@ -128,7 +128,7 @@ function createProxy(config: Config): Hono {
     }
 
     console.log('authorizing refresh token')
-    authorizeRefreshToken(refresh_token)
+    await authorizeRefreshToken(refresh_token)
       .then(({
         access_token: refreshed_access_token,
         expires_in: refreshed_expires_in,
@@ -161,7 +161,7 @@ function createProxy(config: Config): Hono {
     if (typeof code === 'undefined') {
       throw new Error('code is undefined')
     }
-    authorizeCode(code)
+    await authorizeCode(code)
       .then(({
         access_token,
         expires_in,