chore(components): Drop GCPC Python 3.7

PiperOrigin-RevId: 627500444

**Description of your changes:**

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kubernetes_platform/python/setup.py

@@ -76,7 +76,7 @@ def read_readme() -> str:
             'https://github.com/kubeflow/pipelines/tree/master/kubernetes_platform/python',
     },
     packages=setuptools.find_namespace_packages(include=['kfp.*']),
-    python_requires='>=3.7.0,<3.13.0',
+    python_requires='>=3.8.0,<3.13.0',
     install_requires=REQUIREMENTS,
     include_package_data=True,
     extras_require={

sdk/RELEASE.md

@@ -11,6 +11,7 @@
 
 ## Documentation updates
 * Make full version dropdown visible on all KFP SDK docs versions [\#10577](https://github.com/kubeflow/pipelines/pull/10577)
+* Drop support for Python 3.7 since it has reached end-of-life.
 
 # 2.7.0
 

sdk/python/kfp/__init__.py

@@ -21,9 +21,9 @@
 import sys
 import warnings
 
-if sys.version_info < (3, 8):
+if sys.version_info < (3, 9):
     warnings.warn(
-        ('Python 3.7 has reached end-of-life. KFP will drop support for Python 3.7 on April 23, 2024. To use new versions of the KFP SDK after that date, you will need to upgrade to Python >= 3.8. See https://devguide.python.org/versions/ for more details.'
+        ('Python 3.8 has reached end-of-life. KFP will drop support for Python 3.8 in Oct 2024. To use new versions of the KFP SDK after that date, you will need to upgrade to Python >= 3.9. See https://devguide.python.org/versions/ for more details.'
         ),
         FutureWarning,
         stacklevel=2,