Fixes test

Author: simonbs

__test__/common/github/OAuthTokenRefreshingGitHubClient.test.ts

@@ -276,7 +276,7 @@ test("It only retries a request once when receiving HTTP 401", async () => {
 })
 
 test("It does not refresh an OAuth token when the initial request was successful", async () => {
-  const didRefreshOAuthToken = false
+  let didRefreshOAuthToken = false
   const sut = new OAuthTokenRefreshingGitHubClient({
     oauthTokenDataSource: {
       async getOAuthToken() {
@@ -285,6 +285,7 @@ test("It does not refresh an OAuth token when the initial request was successful
     },
     oauthTokenRefresher: {
       async refreshOAuthToken(_refreshToken) {
+        didRefreshOAuthToken = true
         return {
           accessToken: "newAccessToken",
           refreshToken: "newRefreshToken"