ci: update upload-pages-artifact to v4

chore(main): release MacSync 2.1.1 (#25)

fix: improve error message for unconfigured sync folder

docs: add website link to README footer

ci: add docs/** to trigger paths

docs: use pilaton.com/MacSync path instead of subdomain

refactor: merge doc/ into docs/

chore(main): release MacSync 2.1.0 (#24)

feat: add GitHub Pages landing page

chore(main): release MacSync 2.0.1 (#23)

fix: correct version reading from VERSION file

fix: use version-file instead of extra-files to update VERSION in PR

chore: enable json versioning and fix tests

fix: resolve brew publication auth and use json for versioning

chore(main): release MacSync 2.0.0 (#22)