fix: use GitHub Secrets for MSSQL tests, drop service container

No need to spin up a local SQL Server container or install sqlcmd.
Connect directly to the real server using repository secrets:
  MSSQL_TEST_HOST, MSSQL_TEST_PORT, MSSQL_TEST_DB,
  MSSQL_TEST_USER, MSSQL_TEST_PASS

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: vkuttyp

.github/workflows/release.yml

@@ -90,47 +90,20 @@ jobs:
   verify-mssql:
     name: Verify — SQL Server tests
     runs-on: ubuntu-24.04
-    services:
-      mssql:
-        image: mcr.microsoft.com/mssql/server:2022-latest
-        env:
-          ACCEPT_EULA: "Y"
-          SA_PASSWORD: "SuperStr0ngP@ssword!"
-          MSSQL_PID: Developer
-        ports: ["1433:1433"]
-        options: >-
-          --health-cmd "/opt/mssql-tools18/bin/sqlcmd -S localhost -U sa -P 'SuperStr0ngP@ssword!' -Q 'SELECT 1' -C"
-          --health-interval 10s
-          --health-retries 15
     steps:
       - uses: actions/checkout@v4
       - uses: swift-actions/setup-swift@v2
         with:
           swift-version: "6.0"
       - name: Install SQLite
         run: sudo apt-get install -y libsqlite3-dev
-      - name: Install sqlcmd
-        run: |
-          curl -sSL https://github.com/microsoft/go-sqlcmd/releases/latest/download/sqlcmd-linux-amd64.tar.gz \
-            | tar -xz -C /usr/local/bin sqlcmd
-      - name: Create test database
-        timeout-minutes: 3
-        run: |
-          for i in $(seq 1 30); do
-            if sqlcmd -S 127.0.0.1 -U sa -P 'SuperStr0ngP@ssword!' -C \
-                -Q "IF DB_ID('MSSQLNioTestDb') IS NULL CREATE DATABASE MSSQLNioTestDb" 2>/dev/null; then
-              echo "Database ready."
-              break
-            fi
-            echo "Attempt $i: SQL Server not ready yet, retrying in 5s..."
-            sleep 5
-          done
       - name: Run MSSQL tests
         env:
-          MSSQL_TEST_HOST: "127.0.0.1"
-          MSSQL_TEST_PASS: "SuperStr0ngP@ssword!"
-          MSSQL_TEST_DB:   MSSQLNioTestDb
-          MSSQL_TEST_USER: sa
+          MSSQL_TEST_HOST: ${{ secrets.MSSQL_TEST_HOST }}
+          MSSQL_TEST_PORT: ${{ secrets.MSSQL_TEST_PORT }}
+          MSSQL_TEST_DB:   ${{ secrets.MSSQL_TEST_DB }}
+          MSSQL_TEST_USER: ${{ secrets.MSSQL_TEST_USER }}
+          MSSQL_TEST_PASS: ${{ secrets.MSSQL_TEST_PASS }}
         run: swift test --filter MSSQLNioTests
 
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