NO-SNOW: fix flaky tests on invalid proxy (#2492)

(cherry picked from commit a718922)

Author: sfc-gh-fpawlowski

test/integ/test_connection.py

@@ -419,7 +419,7 @@ def test_invalid_account_timeout(conn_cnx):
             pass
 
 
-@pytest.mark.timeout(15)
+@pytest.mark.timeout(20)
 def test_invalid_proxy(conn_cnx):
     http_proxy = os.environ.get("HTTP_PROXY")
     https_proxy = os.environ.get("HTTPS_PROXY")
@@ -451,7 +451,7 @@ def test_invalid_proxy(conn_cnx):
 
 
 @pytest.mark.skipolddriver
-@pytest.mark.timeout(15)
+@pytest.mark.timeout(20)
 def test_invalid_proxy_not_impacting_env_vars(conn_cnx):
     http_proxy = os.environ.get("HTTP_PROXY")
     https_proxy = os.environ.get("HTTPS_PROXY")