Update ubuntu for clang-format (#2537)

* Update ubuntu for clang-format

* Update format.yml

* Update format.yml

Author: Barthelemy

.github/workflows/format.yml

@@ -4,8 +4,7 @@ on: [pull_request]
 
 jobs:
   clang-format:
-    # We need at least 20.04 to install clang-format-11.
-    runs-on: ubuntu-20.04
+    runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v2
         with:
@@ -16,10 +15,12 @@ jobs:
         env:
           DEBIAN_FRONTEND: noninteractive
         run: |
-          sudo apt update -y
-          sudo apt install -y clang-format-11
-          sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-11 100
-          sudo update-alternatives --install /usr/bin/git-clang-format git-clang-format /usr/bin/git-clang-format-11 100
+          sudo apt update
+          sudo apt install -y clang-format-18
+          sudo update-alternatives --install /usr/bin/clang-format \
+            clang-format /usr/bin/clang-format-18 100
+          sudo update-alternatives --install /usr/bin/git-clang-format \
+            git-clang-format /usr/bin/git-clang-format-18 100
       - name: Run clang-format on changed files
         run: |
           set -x