[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

tests/http/proxy/test_http2.py

@@ -18,12 +18,12 @@ class TestHttp2WithProxy(TestCase):
     def test_http2_via_proxy(self) -> None:
         assert self.PROXY
         response = httpx.get(
-            "https://www.google.com",
-            headers={"accept": "application/json"},
+            'https://www.google.com',
+            headers={'accept': 'application/json'},
             verify=httpx.create_ssl_context(http2=True),
             timeout=httpx.Timeout(timeout=5.0),
             proxies={
-                "all://": "http://localhost:%d" % self.PROXY.flags.port,
+                'all://': 'http://localhost:%d' % self.PROXY.flags.port,
             },
         )
         self.assertEqual(response.status_code, 200)