fix(testutils): Modernize google-auth minimum bound to >=2.1.0

Author: chalmerlowe

packages/google-cloud-testutils/setup.py

@@ -55,7 +55,7 @@
     platforms="Posix; MacOS X; Windows",
     include_package_data=True,
     install_requires=(
-        "google-auth >= 0.4.0",
+        "google-auth >= 2.1.0",
         "click>=7.0.0",
         "packaging>=22.0",
     ),

packages/google-cloud-testutils/testing/constraints-3.10.txt

@@ -6,5 +6,5 @@
 # e.g., if setup.py has "foo >= 1.14.0, < 2.0.0dev",
 # Then this file should have foo==1.14.0
 click==7.0.0
-google-auth==0.4.0
+google-auth==2.1.0
 packaging==22.0