fix: cache response headers removed from `GET /octokit-fixture-org/ge…

…t-archive/legacy.tar.gz/main` request (#382)

scenarios/api.github.com/get-archive/normalized-fixture.json

@@ -51,7 +51,6 @@
     "responseIsBinary": true,
     "headers": {
       "access-control-allow-origin": "https://render.githubusercontent.com",
-      "age": "0",
       "connection": "close",
       "content-disposition": "attachment; filename=octokit-fixture-org-get-archive-0000000.tar.gz",
       "content-length": 172,
@@ -60,13 +59,9 @@
       "date": "Tue, 10 Oct 2017 16:00:00 GMT",
       "etag": "\"00000000000000000000000000000000\"",
       "strict-transport-security": "max-age=31536000",
-      "via": "1.1 varnish (Varnish/6.0)",
-      "x-cache": "MISS",
-      "x-cache-hits": "0",
       "x-content-type-options": "nosniff",
       "x-frame-options": "deny",
       "x-github-request-id": "0000:00000:0000000:0000000:00000000",
-      "x-varnish": "1000",
       "x-xss-protection": "1; mode=block"
     }
   }