Bump checksum-maven-plugin from 1.5 to 1.9

Bumps [checksum-maven-plugin](https://github.com/nicoulaj/checksum-maven-plugin) from 1.5 to 1.9.
- [Release notes](https://github.com/nicoulaj/checksum-maven-plugin/releases)
- [Commits](https://github.com/nicoulaj/checksum-maven-plugin/compare/1.5...1.9)

Signed-off-by: dependabot[bot] <support@github.com>
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