[ci] Disable Ubuntu 18.04 builds

.clang-format-common.sh

@@ -1,12 +1,12 @@
 # This script is meant to be sourced from other scripts
 
-# Check for clang-format, prefer 6.0 if available
-if [[ -x "$(command -v clang-format-6.0)" ]]; then
-  clang_format=clang-format-6.0
+# Check for clang-format, prefer 10 if available
+if [[ -x "$(command -v clang-format-10)" ]]; then
+  clang_format=clang-format-10
 elif [[ -x "$(command -v clang-format)" ]]; then
   clang_format=clang-format
 else
-  echo "clang-format or clang-format-6.0 must be installed"
+  echo "clang-format or clang-format-10 must be installed"
   exit 1
 fi
 

.github/workflows/build.yml

@@ -14,23 +14,23 @@ on:
 
 jobs:
   clang-format:
-    runs-on: ubuntu-18.04
+    runs-on: ubuntu-20.04
     steps:
-    - uses: actions/checkout@v2
-    - name: Install clang-format-6.0
+    - uses: actions/checkout@v3
+    - name: Install clang-format-10
       run: |
         sudo rm -f /etc/apt/sources.list.d/dotnetdev.list /etc/apt/sources.list.d/microsoft-prod.list
         sudo apt-get -qq update
         sudo apt-get -qq remove clang-6.0 libclang1-6.0 libclang-common-6.0-dev libllvm6.0
-        sudo apt-get -qq install clang-format-6.0 clang-format
+        sudo apt-get -qq install clang-format-10 clang-format
     - name: Run clang-format-check
       run: |
         ./.clang-format-check.sh
   build:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-18.04, ubuntu-20.04, macos-latest, windows-latest]
+        os: [ubuntu-20.04, ubuntu-22.04, macos-latest, windows-latest]
         build-type: [Debug, RelWithDebInfo]
         compiler: [gcc, clang]
         exclude:
@@ -42,7 +42,7 @@ jobs:
 
     runs-on: ${{ matrix.os }}
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
       with:
         submodules: recursive
     - name: Install dependencies