Bump version on merge of develop and master

[YajanaRao]

I am thinking of creating a github action for bumping patch and minor on merge to develop and main respectively. Thoughts and contributions are welcome.

Currently this is the part of build script:
https://github.com/YajanaRao/Serenity/blob/develop/scripts/build

Which is called in staging workflow:
https://github.com/YajanaRao/Serenity/blob/develop/.github/workflows/staging.yml

This the bump changes are not being merged back to github.