MINOR: [CI] Bump actions/setup-python from 6 to 7 (#1251)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/integration.yml

@@ -107,7 +107,7 @@ jobs:
           key: integration-conda-${{ hashFiles('cpp/**') }}
           restore-keys: integration-conda-
       - name: Setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: 3.12
       - name: Setup Archery