PYTHON-5255 Fix OIDC allowed_hosts test (mongodb#2251)

Author: blink1073

.evergreen/utils.sh

@@ -6,12 +6,12 @@ find_python3() {
     PYTHON=""
     # Find a suitable toolchain version, if available.
     if [ "$(uname -s)" = "Darwin" ]; then
-        PYTHON="/Library/Frameworks/Python.Framework/Versions/Current/bin/python3"
+        PYTHON="/Library/Frameworks/Python.Framework/Versions/3.9/bin/python3"
     elif [ "Windows_NT" = "${OS:-}" ]; then # Magic variable in cygwin
-        PYTHON="C:/python/Current/python.exe"
+        PYTHON="C:/python/Python39/python.exe"
     else
         # Prefer our own toolchain, fall back to mongodb toolchain if it has Python 3.9+.
-        if [ -f "/opt/python/Current/bin/python3" ]; then
+        if [ -f "/opt/python/3.9/bin/python3" ]; then
             PYTHON="/opt/python/Current/bin/python3"
         elif is_python_39 "$(command -v /opt/mongodbtoolchain/v5/bin/python3)"; then
             PYTHON="/opt/mongodbtoolchain/v5/bin/python3"

test/auth_oidc/test_auth_oidc.py

@@ -242,9 +242,9 @@ def test_1_6_allowed_hosts_blocked(self):
                 authmechanismproperties=props,
                 connect=False,
             )
-        # Assert that a find operation fails with a client-side error.
-        with self.assertRaises(ConfigurationError):
-            client.test.test.find_one()
+            # Assert that a find operation fails with a client-side error.
+            with self.assertRaises(ConfigurationError):
+                client.test.test.find_one()
         # Close the client.
         client.close()