Fix MSSQL-2019 tests.

Author: rxu

.github/workflows/tests.yml

@@ -362,20 +362,20 @@ jobs:
         strategy:
             matrix:
                 include:
-                    - php: '7.2'
+                    - php: '7.3'
                       db: "sqlite3"
-                    - php: '7.2'
+                    - php: '7.3'
                       db: "mcr.microsoft.com/mssql/server:2017-latest"
                       db_alias: 'MSSQL 2017'
-                    - php: '7.2'
-                      db: "mcr.microsoft.com/mssql/server:2019-latest"
+                    - php: '7.3'
+                      db: "mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04"
                       db_alias: 'MSSQL 2019'
 
         name: PHP ${{ matrix.php }} - ${{ matrix.db_alias != '' && matrix.db_alias || matrix.db }}
 
         services:
             mssql:
-                image: ${{ matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-latest' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
+                image: ${{ matrix.db != 'mcr.microsoft.com/mssql/server:2017-latest' && matrix.db != 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' && 'mcr.microsoft.com/mssql/server:2017-latest' || matrix.db }}
                 env:
                     SA_PASSWORD: "Pssw0rd_12"
                     ACCEPT_EULA: "y"
@@ -415,7 +415,7 @@ jobs:
               env:
                   MATRIX_DB: ${{ matrix.db }}
               run: |
-                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-latest' ]
+                  if [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2017-latest' ] || [ $MATRIX_DB == 'mcr.microsoft.com/mssql/server:2019-CU27-ubuntu-20.04' ]
                   then
                       db='mssql'
                   else