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/java.yaml

@@ -16,15 +16,15 @@ 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:
           path: ~/.cache/pre-commit
           key: pre-commit|${{ env.pythonLocation }}|${{ hashFiles('.pre-commit-config.yaml') }}
@@ -50,7 +50,7 @@ jobs:
         shell: bash
     steps:
     - name: Check out repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Install Java
       uses: actions/setup-java@v5
       with:
@@ -118,7 +118,7 @@ jobs:
       contents: write
     steps:
     - name: Check out repo
-      uses: actions/checkout@v5
+      uses: actions/checkout@v6
     - name: Download artifacts
       uses: actions/download-artifact@v8
       with: