v0.7.0-rc2

What's Changed

• chore: add minimum client version to server info struct by @ayildirim21 in #115
• chore: update server info field name by @ayildirim21 in #116
• chore: add release documentation by @ayildirim21 in #117
• chore: update release doc by @ayildirim21 in #118
• chore: make release doc more readable by @ayildirim21 in #119
• feat: Fallback Sink by @yhl25 in #120
• chore: update MinimumNumaflowVersion by @KeranYang in #121

Full Changelog: v0.7.0-rc1...v0.7.0-rc2