workflows: update actions/checkout and actions/cache to current

No breaking changes.

Signed-off-by: Benjamin Gilbert <bgilbert@cs.cmu.edu>

Author: bgilbert

.github/workflows/retile.yml

@@ -19,15 +19,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VER }}
       - name: Install dependencies
         run: pip install --break-system-packages ${PYTHON_DEPS}
       - name: Cache dependencies
-        uses: actions/cache/save@v4
+        uses: actions/cache/save@v5
         with:
           key: ${{ env.PIP_CACHE_KEY }}
           path: /home/runner/.cache/pip
@@ -58,13 +58,13 @@ jobs:
       matrix: ${{ fromJson(needs.setup.outputs.slide-matrix) }}
     steps:
       - name: Check out repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VER }}
       - name: Cache dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           key: ${{ env.PIP_CACHE_KEY }}
           path: /home/runner/.cache/pip
@@ -97,13 +97,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check out repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
           python-version: ${{ env.PYTHON_VER }}
       - name: Cache dependencies
-        uses: actions/cache/restore@v4
+        uses: actions/cache/restore@v5
         with:
           key: ${{ env.PIP_CACHE_KEY }}
           path: /home/runner/.cache/pip

.github/workflows/validate.yml

@@ -15,15 +15,15 @@ jobs:
     runs-on: ubuntu-slim
     steps:
       - name: Check out repo
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
           python-version: 3.14
       - name: Install dependencies
         run: python -m pip install pre-commit
       - name: Cache pre-commit environments
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           key: pre-commit|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}
           path: ~/.cache/pre-commit