[ci] Update github actions to use Node 24 versions (#8521)

https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/

Done on the 2027 branch since the force change to Node 24 should (tm)
happen after the last 2026 release. And in case it breaks something and
we do need to backport to 2026, the release timeline on 2027 is not as
strict

.github/workflows/bazel.yml

@@ -62,7 +62,7 @@ jobs:
       - name: Check disk free space post-cleanup
         run: df -h
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with: { fetch-depth: 0 }
 
       - id: Setup_bazel_remote
@@ -106,7 +106,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Set up Go 1.15.x
-        uses: actions/setup-go@v5
+        uses: actions/setup-go@v6
         with:
           cache: false
           go-version: 1.15.x
@@ -117,7 +117,7 @@ jobs:
           cd $(mktemp -d)
           GO111MODULE=on go get github.com/bazelbuild/buildtools/buildifier@6.0.0
 
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with: { fetch-depth: 0 }
 
       - name: Run buildifier
@@ -130,7 +130,7 @@ jobs:
         run: git diff HEAD > bazel-lint-fixes.patch
         if: ${{ failure() }}
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         with:
           name: ${{ matrix.platform }}-bazel-lint-fixes
           path: bazel-lint-fixes.patch
@@ -140,7 +140,7 @@ jobs:
     name: "Robotpy Pregeneration"
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with: { fetch-depth: 0 }
 
       - id: Setup_build_buddy
@@ -166,7 +166,7 @@ jobs:
         run: git diff HEAD > robotpy-pregeneration.patch
         if: ${{ failure() }}
 
-      - uses: actions/upload-artifact@v4
+      - uses: actions/upload-artifact@v6
         with:
           name: robotpy-pregeneration-fixes
           path: robotpy-pregeneration.patch