Drop Python 3.7 and Support Python 3.11 in the SDK (#2337)

Signed-off-by: Yuki Iwai <[email protected]>

Author: tenzen-y

.github/workflows/e2e-test-darts-cifar10.yaml

@@ -21,7 +21,7 @@ jobs:
         uses: ./.github/workflows/template-setup-e2e-test
         with:
           kubernetes-version: ${{ matrix.kubernetes-version }}
-          python-version: "3.7"
+          python-version: "3.11"
 
       - name: Run e2e test with ${{ matrix.experiments }} experiments
         uses: ./.github/workflows/template-e2e-test

sdk/python/v1beta1/setup.py

@@ -55,10 +55,10 @@
         "Intended Audience :: Science/Research",
         "Programming Language :: Python :: 3",
         "Programming Language :: Python :: 3 :: Only",
-        "Programming Language :: Python :: 3.7",
         "Programming Language :: Python :: 3.8",
         "Programming Language :: Python :: 3.9",
         "Programming Language :: Python :: 3.10",
+        "Programming Language :: Python :: 3.11",
         "License :: OSI Approved :: Apache Software License",
         "Operating System :: OS Independent",
         "Topic :: Scientific/Engineering",