fix: add google-auth as a direct dependency

chore: remove deprecated constraints-3.7.txt file

Fixes #3274

PiperOrigin-RevId: 605363132

setup.py

@@ -133,6 +133,8 @@
     + profiler_extra_require
     + [
         "bigframes; python_version>='3.10'",
+        # google-api-core 2.x is required since kfp requires protobuf > 4
+        "google-api-core >= 2.11, < 3.0.0",
         "grpcio-testing",
         "ipython",
         "kfp >= 2.6.0, < 3.0.0",
@@ -172,7 +174,8 @@
     platforms="Posix; MacOS X; Windows",
     include_package_data=True,
     install_requires=(
-        "google-api-core[grpc] >= 1.32.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
+        "google-api-core[grpc] >= 1.34.0, <3.0.0dev,!=2.0.*,!=2.1.*,!=2.2.*,!=2.3.*,!=2.4.*,!=2.5.*,!=2.6.*,!=2.7.*",
+        "google-auth >= 2.14.1, <3.0.0dev",
         "proto-plus >= 1.22.0, <2.0.0dev",
         "protobuf>=3.19.5,<5.0.0dev,!=3.20.0,!=3.20.1,!=4.21.0,!=4.21.1,!=4.21.2,!=4.21.3,!=4.21.4,!=4.21.5",
         "packaging >= 14.3",

testing/constraints-3.8.txt

@@ -1,7 +1,9 @@
 # -*- coding: utf-8 -*-
-# This constraints file is required for unit tests.
-# List all library dependencies and extras in this file.
-google-api-core
+# This constraints file is used to check that lower bounds
+# are correct in setup.py
+# List *all* library dependencies and extras in this file.
+google-api-core==2.11.0
+google-auth==2.14.1
 proto-plus==1.22.0
 protobuf
 mock==4.0.2