CI: upgrade actions, print Go version

Keeping actions on a recent version is necessary because older
ones are deprecated over time and would at some point error.
We have seen such errors already, so this upgrades all actions.

Also drop the GO111MODULE env var. Go has changed.

Signed-off-by: Daniel Maslowski <info@orangecms.org>

.github/workflows/ci.yml

@@ -26,8 +26,6 @@ jobs:
     env:
       # Setup $GOPATH
       GOPATH: ${{ github.workspace }}/go
-      # Turn off modules because they are broken.
-      GO111MODULE: off
 
     # Run the build for each one of these configurations in parallel.
     strategy:
@@ -69,12 +67,12 @@ jobs:
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can
       # access it.
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       # We need this newer version of Go.
       - name: Go version
-        uses: actions/setup-go@v2
+        uses: actions/setup-go@v5
         with:
-          go-version: '^1.17.6'
+          go-version: '1.21'
       - name: Install dependent packages
         run: |
           set -ex
@@ -90,13 +88,14 @@ jobs:
       - name: Make ${{ matrix.mainboard }} kernel
         run: |
           set -ex
+          go version
           cd mainboards
           PATH=$GOPATH/bin:/usr/local/go/bin:$PATH
           cd $(echo ${{ matrix.mainboard }} | tr '-' '/')
           make fetch
           make flashkernel
       - name: Upload Artifact
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.mainboard }}
           path: |