chore: bump mcpp to 0.0.44

[Sunrisepeak]

Summary

• Bump mcpp package version and BMI fingerprint version to 0.0.44.
• Add changelog entry for the git branch dependency cache/lock fix merged after 0.0.43.

Test Plan

• git diff --check
• mcpp clean && mcpp build && mcpp test, bootstrapped with released mcpp 0.0.43
• MCPP= bash tests/e2e/24_git_dependency.sh
• --version reports mcpp 0.0.44