A script to migrate from Bootstrap 4 to Bootstrap 5
To run the script:
./migrate-bs4-to-bs5.sh <folder>
This is far from perfect, some classes are missing, some classes are custom and won't apply to your case, creates double spaces at times.
Feel free to modify and PR.
Initially taken from https://gist.github.com/Juanosorio94/f76535a1264ac6f7251c643af50c184d