Update GitHub Actions and Flutter dependencies for security and compatibility#86

Copilot wants to merge 2 commits intomasterActivitySpaceProject/space_mapper:masterfrom

copilot/fix-3a9c4e3e-68a2-46c2-9301-d5c48061509aActivitySpaceProject/space_mapper:copilot/fix-3a9c4e3e-68a2-46c2-9301-d5c48061509aCopy head branch name to clipboard