Update actions/setup-python action to v6 (#3870)

Author: solrbot

.github/workflows/renovate-changelog.yml

@@ -29,7 +29,7 @@ jobs:
           token: ${{ secrets.SOLRBOT_GITHUB_TOKEN }}
 
       - name: Set up Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.x'
 

changelog/unreleased/PR#3870-update-actions-setup-python-action.yml

@@ -0,0 +1,7 @@
+title: Update actions/setup-python action to v6
+type: dependency_update
+authors:
+- name: solrbot
+links:
+- name: PR#3870
+  url: https://github.com/apache/solr/pull/3870