Upgrade Servlet API 4.0.4 -> 6.0.0

[Picnic-Bot]

This PR contains the following updates:

Package	Type	Update	Change
jakarta.servlet:jakarta.servlet-api (source)	compile	major	4.0.4 -> 6.0.0

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Release Notes

eclipse-ee4j/servlet-api

v6.0.0

Compare Source

v5.0.0

Compare Source

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[Picnic-Bot]

Suggested commit message:

Upgrade Servlet API 4.0.4 -> 6.0.0 (#119)

See https://github.com/eclipse-ee4j/servlet-api/compare/4.0.4-RELEASE...6.0.0

[Stephan202]

This PR replaces #68. We can't yet merge this PR because it migrates from the javax to jakara namespace, while downstream we still use javax.

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[Stephan202]

Following the changes in #543 the only thing that prevented this build from passing was an update to the test code. I added a commit; I think there's no harm in merging this PR, even though internally we haven't yet upgraded (but we likely will this quarter still).

[Picnic-Bot]

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[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[sonarqubecloud]

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