Update cmake.yml

Author: Gogoshika-ga

.github/workflows/cmake.yml

@@ -31,17 +31,17 @@ jobs:
       #
       # To add more build types (Release, Debug, RelWithDebInfo, etc.) customize the build_type list.
       matrix:
-        os: [ubuntu-latest, windows-latest, macOS-latest] 
+        os: [ubuntu-20.04, windows-latest, macOS-latest] 
         build_type: ${{ fromJSON(format('[{0}]', inputs.build_type || '"Debug","Release"')) }}
         c_compiler: [gcc, clang, cl]
         include:
           - os: windows-latest
             c_compiler: cl
             cpp_compiler: cl
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             c_compiler: gcc
             cpp_compiler: g++
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             c_compiler: clang
             cpp_compiler: clang++
           - os: macOS-latest
@@ -52,7 +52,7 @@ jobs:
             c_compiler: gcc
           - os: windows-latest
             c_compiler: clang
-          - os: ubuntu-latest
+          - os: ubuntu-20.04
             c_compiler: cl
           - os: macOS-latest
             c_compiler: cl
@@ -72,7 +72,7 @@ jobs:
         echo "build-output-dir=${{ github.workspace }}/build" >> "$GITHUB_OUTPUT"
 
     - name: Install Clang and Libraries
-      if: matrix.os == 'ubuntu-latest' && matrix.c_compiler == 'clang'
+      if: matrix.os == 'ubuntu-20.04' && matrix.c_compiler == 'clang'
       run: |
         sudo apt-get update
         sudo apt-get install -y clang libc++-dev libc++abi-dev
@@ -86,7 +86,7 @@ jobs:
         sudo update-alternatives --set clang++ /usr/bin/clang++-16
 
     - name: Check Clang Settings
-      if: matrix.os == 'ubuntu-latest' && matrix.c_compiler == 'clang'
+      if: matrix.os == 'ubuntu-20.04' && matrix.c_compiler == 'clang'
       run: |
         clang --version
         clang++ --version
@@ -130,4 +130,4 @@ jobs:
         name: ga-cpp-sdk-${{ matrix.os }}-${{ matrix.c_compiler }}-${{ matrix.build_type }}
         path: ${{ steps.strings.outputs.build-output-dir }}/package/
         retention-days: 3
-    
+