ping brew mysql to 8.4

Homebrew/homebrew-core#180498

Author: zhangyangyu

.github/workflows/compatibility-test.yml

@@ -233,7 +233,7 @@ jobs:
       - name: Install mysql in macos
         if: ${{ matrix.os == 'macos-14' }}
         run: |
-          brew install mysql-client
+          brew install mysql-client@8.4
           export PKG_CONFIG_PATH="/opt/homebrew/opt/mysql-client/lib/pkgconfig"
           pip3 install mysqlclient --break-system-packages
       - name: Run test on ${{ matrix.os }}
@@ -308,7 +308,7 @@ jobs:
       - name: Install mysql in macos
         if: ${{ matrix.os == 'macos-14' }}
         run: |
-          brew install mysql-client
+          brew install mysql-client@8.4
           export PKG_CONFIG_PATH="/opt/homebrew/opt/mysql-client/lib/pkgconfig"
           pip3 install mysqlclient --break-system-packages
       - name: Run test on ${{ matrix.os }}
@@ -424,7 +424,7 @@ jobs:
       - name: Install mysql on macos
         if: ${{ matrix.os == 'macos-14' }}
         run: |
-          brew install mysql
+          brew install mysql@8.4
           cd example_code/ruby
           # https://github.com/Homebrew/homebrew-core/issues/130258
           gem install mysql2 -- --with-mysql-dir=$(brew --prefix mysql)
@@ -479,7 +479,7 @@ jobs:
       - name: Run test on macos
         if: ${{ matrix.os == 'macos-14' }}
         run: |
-          brew install mysql-client
+          brew install mysql-client@8.4
           export PKG_CONFIG_PATH="/opt/homebrew/opt/mysql-client/lib/pkgconfig"
           flags=$(pkg-config --cflags --libs mysqlclient)
           cd example_code/cpp