Update dependency CSharpIsNullAnalyzer to 0.2.19

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
CSharpIsNullAnalyzer	0.1.593 → 0.2.19

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Release Notes

AArnott/CSharpIsNull (CSharpIsNullAnalyzer)

v0.2.19

What's Changed

• Fix pointer null comparison code fixes by @​AArnott in #​104
• Apply modern Roslyn analyzer patterns and target VS 2022 Update 14 by @​AArnott in #​105

Full Changelog: AArnott/CSharpIsNull@v0.2.12...v0.2.19

v0.2.12

What's Changed

• Sign shipping binaries @​AArnott in #​97
• Add IQueryable expression tree regression coverage by @​AArnott in #​98
• Make CSIsNull002 guidance syntax-neutral by @​yitzhaks in #​99

New Contributors

• @​yitzhaks made their first contribution in #​99

Full Changelog: AArnott/CSharpIsNull@v0.1.593...v0.2.12

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Pull request overview

Updates the centrally managed NuGet package version for CSharpIsNullAnalyzer in Directory.Packages.props, keeping the repo’s analyzer dependency aligned with the latest upstream improvements.

Changes:

• Bump CSharpIsNullAnalyzer from 0.1.593 to 0.2.19.

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🟢 Approval recommended

The change is a straightforward analyzer-only dependency version bump with no additional code modifications or conflicting references found.

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