feat(manager/maven): provide warning log if pom contains windows line ending

[sebtiem]

Changes

As discussed in 19090, I added a warning log message if windows line endings are present when extracting the contents of a maven pom.xml.

Context

See discussion 19090.

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✅ rarkins
❌ Sebastian Panse

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[renovate-release]

🎉 This PR is included in version 38.124.0 🎉

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• npm package (@latest dist-tag)
• 38.124.0

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