Upgrade GitHub Actions for Node 24 compatibility

.github/workflows/bandit.yml

@@ -13,7 +13,7 @@
 #     runs-on: ubuntu-latest
 
 #     steps:
-#       - uses: actions/checkout@v2
+#       - uses: actions/checkout@v6
 
 #       # Task will fail if any high-severity issues are found
 #       # Ignoring submodules

.github/workflows/lint.yml

@@ -22,7 +22,7 @@ jobs:
         python-version: ['3.11']
     steps:
       - name: Check out repo
-        uses: actions/checkout@v3
+        uses: actions/checkout@v6
       - name: Setup conda env
         uses: conda-incubator/setup-miniconda@v2
         with:

.github/workflows/pr-labels.yml

@@ -13,13 +13,13 @@ name: pr-labels
 
 #     steps:
 #       - name: Set up python
-#         uses: actions/setup-python@v2
+#         uses: actions/setup-python@v6
 
 #       - name: Install requests
 #         run: pip install requests
 
 #       - name: Checkout repository
-#         uses: actions/checkout@v2
+#         uses: actions/checkout@v6
 
 #       - name: Process commit and find merger responsible for labeling
 #         id: commit