updating and testing Sam's bumpversion work

• this replaces MR!1498
• now handles 3 and 4 digit releases

❯ bump-my-version show-bump 2.8.2.3rc1
2.8.2.3rc1 ── bump ─┬─ major ─ 3.0.0dev0
                    ├─ minor ─ 2.9.0dev0
                    ├─ patch ─ 2.8.3dev0
                    ├─ pre_l ─ 2.8.2.3
                    ╰─ pre_n ─ 2.8.2.3rc2

To test: ❯ bump-my-version bump pre_l --current-version=2.8.2.3rc1 --config-file=./.bumpversion.toml --ignore-missing-version the ignore-missing-version flag is required to bypass updating pycapo