Add MacOS cases without the SSL directory env.

.github/workflows/build.yml

@@ -8,7 +8,7 @@ env:
 jobs:
   build:
     name: >-
-      ${{ matrix.os }} ruby ${{ matrix.ruby }} ${{ matrix.db }}
+      ${{ matrix.os }} ruby ${{ matrix.ruby }} ${{ matrix.db }} ${{ matrix.extra || '' }}
     # Run all the tests on the new environment as much as possible.
     # https://docs.github.com/en/free-pro-team@latest/actions/reference/specifications-for-github-hosted-runners
     runs-on: ${{ matrix.os }}
@@ -45,20 +45,24 @@ jobs:
           # MariaDB lastet version
           # Allow failure due to the following test failures that rarely happens.
           # https://github.com/brianmario/mysql2/issues/1194
+          - {os: macos-latest, ruby: '2.6', db: mariadb, allow-failure: true, env: {}}
           - os: macos-latest
             ruby: '2.6'
             db: mariadb
             allow-failure: true
             env:
               RUBY_MYSQL2_HOMEBREW_SSL_DIR: '/usr/local/opt/[email protected]'
+            extra: 'with RUBY_MYSQL2_HOMEBREW_SSL_DIR'
           # MySQL latest version
           # Allow failure due to the issue #1194.
+          - {os: macos-latest, ruby: '2.6', db: mysql, allow-failure: true, env: {}}
           - os: macos-latest
             ruby: '2.6'
             db: mysql
             allow-failure: true
             env:
               RUBY_MYSQL2_HOMEBREW_SSL_DIR: '/usr/local/opt/[email protected]'
+            extra: 'with RUBY_MYSQL2_HOMEBREW_SSL_DIR'
       # On the fail-fast: true, it cancels all in-progress jobs
       # if any matrix job fails unlike Travis fast_finish.
       fail-fast: false