Migrate HealthChecks.SqlServer tests to Testcontainers

[Alirexaa]

What this PR does / why we need it:

Which issue(s) this PR fixes:

Contributes to #2335

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Please make sure you've completed the relevant tasks for this PR, out of the following list:

• Code compiles correctly
• Created/updated tests
• Unit tests passing
• End-to-end tests passing
• Extended the documentation
• Provided sample for the feature

[adamsitnik]

Overall it looks great, but it would be nice if we could simplify the yml file and reuse the pattern in other PRs (so introducing changes in the future like updating to .NET 10 requires even fewer changes).

Thank you @Alirexaa !

[adamsitnik]

Seeing this change made me realize that we now may be able to do some yaml refactoring and reuse the https://github.com/Xabaril/AspNetCore.Diagnostics.HealthChecks/blob/master/.github/workflows/reusable_ci_workflow.yml file.

The jobs part for this file could be just:

jobs:
  build:
    uses: ./.github/workflows/reusable_ci_workflow.yml
    with:
      PROJECT_PATH: ./src/HealthChecks.SqlServer/HealthChecks.SqlServer.csproj
      TEST_PROJECT_PATH: ./test/HealthChecks.SqlServer.Tests/HealthChecks.SqlServer.Tests.csproj
      CODECOV_FLAGS: SqlServer

(I took the example from

AspNetCore.Diagnostics.HealthChecks/.github/workflows/healthchecks_cosmosdb_ci.yml

Lines 30 to 36 in f54852f

	jobs:
	build:
	uses: ./.github/workflows/reusable_ci_workflow.yml
	with:
	PROJECT_PATH: ./src/HealthChecks.CosmosDb/HealthChecks.CosmosDb.csproj
	TEST_PROJECT_PATH: ./test/HealthChecks.CosmosDb.Tests/HealthChecks.CosmosDb.Tests.csproj
	CODECOV_FLAGS: CosmosDb

)