Update lint-test.yaml

bump python

Author: yishaynaPalo

.github/workflows/lint-test.yaml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@65d7f2d534ac1bc67fcd62888c5f4f3d2cb2b236 # v4.7.1
         with:
-          python-version: 3.x
+          python-version: 3.13
 
       - name: Set up chart-testing
         uses: helm/chart-testing-action@0d28d3144d3a25ea2cc349d6e59901c4ff469b3b # v2.7.0
@@ -47,4 +47,4 @@ jobs:
 
       - name: Run chart-testing (install)
         if: steps.list-changed.outputs.changed == 'true'
-        run: ct install --config ct.yaml
+        run: ct install --config ct.yaml