Bump System.IO.Pipelines from 6.0.2 to 6.0.3

[dependabot[bot]]

Bumps System.IO.Pipelines from 6.0.2 to 6.0.3.

Release notes

Sourced from System.IO.Pipelines's releases.

.NET 6.0.3

Release

Commits

• c24d9a9 Merge in 'release/6.0' changes
• 3ba4b3f Port of #60580 (#65811)
• 544ba63 Merge in 'release/6.0' changes
• 48e7d76 Merge pull request #65794 from dotnet/revert_r2rmacos
• 542d168 Revert "[release/6.0] Fix ReadyToRun loading on Apple Silicon (#64104)"
• 10db735 Merged PR 21170: Fixing the shift-left handling to correctly account for over...
• 5b0b8a0 Merge in 'release/6.0' changes
• 6dd808f [release/6.0] Fix long directory path test (#64955)
• 5e65919 [release/6.0] Port ICU tests fix for server core x86 (#65038)
• fa9dc99 Merge in 'release/6.0' changes
• Additional commits viewable in compare view

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