Update software versions used in CI

The ubuntu-20.04 runner is due to be deprecated on 2025-02-01 and unsupported by 2025-04-01.

The previous version of the metadata validator wouldn't run on Ubuntu 24.04 due to a dependency version mismatch, so has been updated.

The actions/checkout and actions/setup-node actions have also been updated to their latest major versions.

The version of Node.js used has also been updated to the latest LTS version.

.github/workflows/ci.yml

@@ -6,23 +6,27 @@ on: [push, pull_request]
 jobs:
 
   build:
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
 
       - name: Set up Node
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
 
       - name: Install metadata validator dependencies
         run: |
-          wget https://github.com/unicode-org/icu/releases/download/release-71-1/icu4c-71_1-Ubuntu20.04-x64.tgz
-          tar -xf icu4c-71_1-Ubuntu20.04-x64.tgz
-
-          echo "LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${{ github.workspace }}/icu/usr/local/lib" >> "$GITHUB_ENV"
+          sudo apt-get update
+          sudo apt-get install -y --no-upgrade \
+            libicu74 \
+            libtbb12
 
       - name: Install metadata validator
-        run: wget https://github.com/loot/metadata-validator/releases/download/0.21.0/metadata-validator-0.21.0-0-gd56177b_0.21.0-Linux.tar.xz -O - | tar -xJ --strip-components=1
+        run: |
+          wget https://github.com/loot/metadata-validator/releases/download/0.24.0/metadata-validator-0.24.0-0-g36fea7e_0.24.0-Linux.tar.xz -O - | tar -xJ --strip-components=1
+          ln -s libloot.so.0.24.5 libloot.so.0
 
       - name: Install parser
         run: npm install -g js-yaml