Tweak docker bits

To test locally:
```
$env:SqlServerConnectionString = "Server=.;Database=tempdb;User Id=sa;Password=saAccountI#v3rySecure;"
$env:OLEDBConnectionString = "Provider=SQLOLEDB;Server=.;Database=tempdb;User Id=sa;Password=saAccountI#v3rySecure;"
$env:MySQLConnectionString = "server=localhost;Port=3306;Uid=root;Pwd=root;Database=test;Allow User Variables=true"
$env:PostgreSqlConnectionString = "Server=localhost;Port=5432;Database=test;User Id=postgres;Password=postgres;"
```

Author: Nick Craver

.github/workflows/main.yml

@@ -47,7 +47,8 @@ jobs:
       env:
         EnableTestLogging: true
         MySQLConnectionString: server=localhost;Port=${{ job.services.mysql.ports[3306] }};Uid=root;Pwd=root;Database=test;Allow User Variables=true
+        OLEDBConnectionString: Provider=SQLOLEDB;Server=tcp:127.0.0.1,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=saAccountI#v3rySecure;
         PostgreSqlConnectionString: Server=localhost;Port=${{ job.services.postgres.ports[5432] }};Database=test;User Id=postgres;Password=postgres;
-        SQLServerConnectionString: Server=tcp:127.0.0.1,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=g0d4mm!tSQLServer;
+        SQLServerConnectionString: Server=tcp:127.0.0.1,${{ job.services.sqlserver.ports[1433] }};Database=tempdb;User Id=sa;Password=saAccountI#v3rySecure;
     - name: .NET Lib Pack
       run: dotnet pack Build.csproj --no-build -c Release /p:PackageOutputPath=%CD%\.nupkgs /p:CI=true

tests/docker-compose.yml

@@ -18,7 +18,7 @@ services:
       POSTGRES_PASSWORD: postgres
       POSTGRES_DB: test
   sqlserver:
-    image: microsoft/mssql-server-linux:2019-latest
+    image: mcr.microsoft.com/mssql/server:2019-latest
     container_name: sql-server-db
     ports:
       - 1433:1433