Update appveyor.yml

Author: hazzik

appveyor.yml

@@ -2,17 +2,17 @@ version: '{build}'
 image: Visual Studio 2022
 environment:
   matrix:
-  # - DB: SqlServer2008
-  #   CONNECTION_STRING: Server=(local)\SQL2017;User ID=sa;Password=Password12!;initial catalog=nhibernate;
-  # - DB: SqlServer2008-MicrosoftDataSqlClientDriver
-  #   CONNECTION_STRING: Server=(local)\SQL2017;User ID=sa;Password=Password12!;initial catalog=nhibernate;
+  - DB: SqlServer2008
+    CONNECTION_STRING: Server=(local)\SQL2017;User ID=sa;Password=Password12!;initial catalog=nhibernate;
+  - DB: SqlServer2008-MicrosoftDataSqlClientDriver
+    CONNECTION_STRING: Server=(local)\SQL2017;User ID=sa;Password=Password12!;initial catalog=nhibernate;
   - DB: PostgreSQL
     CONNECTION_STRING: Host=localhost;Port=5432;Username=postgres;Password=Password12!;Database=nhibernate;Enlist=true;
-  # - DB: Firebird
-  # - DB: Firebird4
-  # - DB: MySQL
-  #   CONNECTION_STRING: Server=127.0.0.1;Uid=root;Pwd=Password12!;Database=nhibernate;Old Guids=True;SslMode=none;CharSet=utf8;
-  # - DB: SQLite
+  - DB: Firebird
+  - DB: Firebird4
+  - DB: MySQL
+    CONNECTION_STRING: Server=127.0.0.1;Uid=root;Pwd=Password12!;Database=nhibernate;Old Guids=True;SslMode=none;CharSet=utf8;
+  - DB: SQLite
 init:
     # Required for having windows endlines in sources zip
     - git config --global core.autocrlf true