Update dependency com.powsybl:powsybl-parent to v21

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
com.powsybl:powsybl-parent (source)	14 -> 21

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Release Notes

powsybl/powsybl-parent (com.powsybl:powsybl-parent)

v21

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Java 17 -> Java 21 and maven core 3.9.9 and plugin updates

some configuration is added by default to behave like the previous JDK and avoid warnings
maven compiler plugin -proc:full
tests (surefire and failsafe) -XX:+EnableDynamicAgentLoading

Full Changelog: powsybl/powsybl-parent@v20...v21

v20

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What's Changed

• Springboot 3.3.3 migration (#​62)
• Update io.github.git-commit-id:git-commit-id-maven-plugin to 8.0.2 (#​62)

Full Changelog: powsybl/powsybl-parent@v19...v20

v19

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What's Changed

• Update liquibase-hibernate version to 4.26.0 (#​58)

Full Changelog: powsybl/powsybl-parent@v18...v19

v18

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What's Changed

• Fix lombok configuration on Windows (#​55)
• Simplify groovydoc generation (#​50) ⚠️ See the migration steps in the PR description.

Full Changelog: powsybl/powsybl-parent@v17...v18

v17

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What's Changed

upgrade liquibase-hibernate 4.20 -> 4.23.2 (https://github.com/powsybl/powsybl-parent/pull/53) This fixes type change from uuid to bytea in liquibase diff

Full Changelog: powsybl/powsybl-parent@v16...v17

v16

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What's Changed

• Fix incompatibility between Liquibase and Hibernate with Spring Boot 3

v15

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• Use "org.apache.groovy" instead of " org.codehaus.groovy" for groovydoc by default to favor projects compatible with powsybl 6.0.0 dependency versions
• Use springboot 3.1.2 and associated build systems version
  • liquibase 4.5.0 -> 4.20.0
  • pl.project13.maven:git-commit-id-plugin -> io.github.git-commit-id:git-commit-id-maven-plugin )

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