Cease testing on Python 3.7

Author: akx

Diff for: .github/workflows/integration.yaml

@@ -57,7 +57,7 @@ jobs:
        max-parallel: 15
        fail-fast: false
        matrix:
-         python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9']
+         python-version: ['3.8', '3.9', '3.10', '3.11', 'pypy-3.8', 'pypy-3.9']
          test-type: ['standalone', 'cluster']
          connection-type: ['hiredis', 'plain']
      env:
@@ -111,7 +111,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.11']
+        python-version: ['3.11']
         test-type: ['standalone', 'cluster']
         connection-type: ['hiredis', 'plain']
         protocol: ['3']
@@ -160,7 +160,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', 'pypy-3.7', 'pypy-3.8', 'pypy-3.9']
+        python-version: ['3.8', '3.9', '3.10', '3.11', 'pypy-3.8', 'pypy-3.9']
     steps:
       - uses: actions/checkout@v3
       - uses: actions/setup-python@v4