Simplify the version bump process. ### Description

Simplify the version bump process.

- Use substitution hook in docs to update CDN URL.
  - In `dev` or `prerelease` versions, it will point to `dev` url
  - In `stable` versions, it will point it `vX.Y.Z` url
- Introduce a version bump script `tools/bump_version.py`.


~- Use `bump2version` to bump Python versions (continuing from #2460)~
~- Use `npm version` to bump JS versions~
~- Update `run_docker` script to use latest deployed pre-built docker image when `--pre-built` option is specified.~

### Checklists

- [x] Add new / update outdated documentation

package:
  name: biopython
  version: "1.79"
requirements:
  run:
    - numpy
source:
  sha256: edb07eac99d3b8abd7ba56ff4bedec9263f76dfc3c3f450e7d2e2bcdecf8559b
  url: https://files.pythonhosted.org/packages/28/73/4d61169ce1f15c65ea49af89e534b2089375a44b608cb65062b58ff414de/biopython-1.79.tar.gz
test:
  imports:
    - Bio

package:
  name: biopython
  version: "1.79"
requirements:
  run:
    - numpy
source:
  sha256: edb07eac99d3b8abd7ba56ff4bedec9263f76dfc3c3f450e7d2e2bcdecf8559b
  url: https://files.pythonhosted.org/packages/28/73/4d61169ce1f15c65ea49af89e534b2089375a44b608cb65062b58ff414de/biopython-1.79.tar.gz
test:
  imports:
    - Bio
