fix: resolve SQL Server container initialization issues in GitHub Actions

- Added MSSQL_PID='Developer' to specify SQL Server edition
- Added MSSQL_MEMORY_LIMIT_MB='2048' to set explicit memory limit
- Updated sqlcmd path to /opt/mssql-tools18/bin/sqlcmd for SQL Server 2022
- Added -No flag to sqlcmd to disable certificate validation
- Increased health check intervals and added 30s start period
- Added wait step to ensure SQL Server is ready before running tests
- Used netcat to check port availability instead of docker exec

Author: lotyp

.github/workflows/testing-mssql.yml

@@ -43,11 +43,14 @@ jobs:
         env:
           ACCEPT_EULA: 'Y'
           SA_PASSWORD: 'SSpaSS__1_123'
+          MSSQL_PID: 'Developer'
+          MSSQL_MEMORY_LIMIT_MB: '2048'
         options: >-
-          --health-cmd "/opt/mssql-tools/bin/sqlcmd -S localhost -U sa -P 'SSpaSS__1_123' -l 30 -Q 'SELECT 1'"
-          --health-interval 4s
-          --health-timeout 2s
-          --health-retries 16
+          --health-cmd "/opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P 'SSpaSS__1_123' -l 30 -Q 'SELECT 1' -No"
+          --health-interval 10s
+          --health-timeout 5s
+          --health-retries 10
+          --health-start-period 30s
         ports:
           - 11433:1433