Update lint.yml to new python version 3.10.15

Update lint.yml to new python version 3.10.15

.github/workflows/lint.yml

@@ -11,10 +11,10 @@ jobs:
 
     steps:
     - uses: actions/checkout@v1
-    - name: Set up Python 3.7
+    - name: Set up Python 3.10.15
       uses: actions/setup-python@v1
       with:
-        python-version: 3.7
+        python-version: 3.10.15
     - name: Lint slack.json
       run: |
         cat slack.json | python -m json.tool  >> /dev/null && exit 0 || echo "Invalid JSON"; exit 1