Rename and update all the things by 2026-08-10 (InnerSource Working Group)

[jeffabailey]

• @meller13 Update the repo & refs to ispo wg: https://github.com/InnerSourceCommons/ispo-working-group
• @jeffabailey Rename project board: InnerSource Commons Working Group (view)
• Review that the things on the board are relevant
• @jeffabailey Update the channel name
• @jeffabailey Rename the calendar events
• Update https://innersourcecommons.org/community/ page
• Prepare announcement
• Publish announcement
• Update video created by Russ
• @jeffabailey Rework the presentation deck
• Invite ourselves to the next community call
• Invite ourselves to the next all members call
• Present at the next community call
• Provide newsletter content
• Provide social content
• Run an open house call to invite people to the new format
• Let the FinOS group know they can join forces with us where applicable
• See if we can lift community engagement restrictions within the InnerSource Working Group for the Financial Industry
• Update the quick start guide pointing to our group