Merge pull request #89 from riscv/rpsene/update-github-action-versions

Update GitHub Actions to requested versions

Author: ybc-alkaid

.github/workflows/build-pdf.yml

@@ -41,7 +41,7 @@ jobs:
       id: step2
       run: echo "::set-output name=pdf-name::$NAME.pdf"
     - name: Checkout repository
-      uses: actions/checkout@v2
+      uses: actions/checkout@v6
       with:
         submodules: 'true'
     - name: Install Ubuntu packages
@@ -72,7 +72,7 @@ jobs:
         PATH=${PATH}:${BUNDLE_BIN}:$(npm bin) \
         make
     - name: Archive PDF result
-      uses: actions/upload-artifact@v2
+      uses: actions/upload-artifact@v6
       with:
         name: ${{ env.NAME }}.pdf
         path: ${{ env.NAME }}.pdf