deps: Update dependency dotnet-stryker to v4.15.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
dotnet-stryker (source)	4.14.2 → 4.15.0

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Release Notes

stryker-mutator/stryker-net (dotnet-stryker)

v4.15.0

Compare Source

Bug Fixes

• mtp: Add StackOverflowException handling in MTP testrunner (#​3650) (297d88c)
• mtp: Kill test processes on interuption (#​3617) (7e61f27)

Features

• compilation: Improve code generation support (#​3611) (8e7f606)
• Retrieve actual project's language version when not configured (#​3642) (c706801)

4.14.2 (2026-05-17)

Bug Fixes

• mtp: attribute error/timed-out/cancelled states as failures (#​3560) (58969ca), closes #​3094
• mtp: Disable DiffEngine and the Verify clipboard feature (#​3547) (f7b2f20)
• mutating: out var in lambdas triggering NRE (#​3575) (5ce07cc)
• rollback: Improve rollback for CS0165 and CS0177 compile errors (#​3548) (b42be0e)

4.14.1 (2026-04-10)

Bug Fixes

• baseline: S3 Provider Cleanup (#​3491) (4a40c42)
• handle null Messages in TestRunAccumulator.Aggregate (#​3513) (58a89b7), closes #​3510 #​3510 #​3510

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