Update dependency simp/dconf to v2

[renovate]

This PR contains the following updates:

Package	Update	Change
simp/dconf	major	1.0.0 → 2.0.0

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Release Notes

simp/pupmod-simp-dconf (simp/dconf)

v2.0.0

Compare Source

Release of 2.0.0

• Switch requirements from puppet to openvox (>= 8 < 9)
• Point issues_url at GitHub Issues
• Drop end-of-life OS support (CentOS 8, EL7); list EL10 across all supported distros
• Allow newer SIMP module dependencies (see metadata.json diff)
• Sync Gemfile with current puppetsync baseline (adds OpenVox to test gems)
• Drop Puppet 7 / Ruby 2.7 from GitHub Actions; use Ruby 3.2.11 with OpenVox 8 and 3.4.9 elsewhere

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