Version 4.9.0

Other changes

• Add support of Ruby 3.4 in CI.
• Refresh CI and dependency support for current Ruby stdlib packaging and rexml updates.

What's Changed

• Bump rexml from 3.2.6 to 3.2.8 by @dependabot[bot] in #143
• Bump rexml from 3.2.8 to 3.3.9 by @dependabot[bot] in #148
• Bump rexml from 3.3.9 to 3.4.2 by @dependabot[bot] in #154
• fix: support Ruby 3.4 and expand CI coverage by @eitoball in #152
• Version 4.9.0 by @eitoball in #155

Full Changelog: v4.8.0...v4.9.0