docs(readme): update for BPT@12 becoming BPT@latest

Author: Xunnamius

README.md

@@ -49,8 +49,6 @@ This package is tested on both Windows and nix (Ubuntu) environments.
 <!-- DON'T EDIT THIS SECTION, INSTEAD RE-RUN doctoc TO UPDATE -->
 
 - [Install](#install)
-  - [`babel-plugin-tester@11`](#babel-plugin-tester11)
-  - [`babel-plugin-tester@12`](#babel-plugin-tester12)
 - [Usage](#usage)
   - [Import](#import)
   - [Invoke](#invoke)
@@ -85,55 +83,10 @@ This package is tested on both Windows and nix (Ubuntu) environments.
 
 <!-- symbiote-template-region-end -->
 
-Currently, babel-plugin-tester comes in two flavors:
-
-### `babel-plugin-tester@11`
-
 ```shell
 npm install --save-dev babel-plugin-tester
-# Alternatively:
-#npm install --save-dev babel-plugin-tester@11
 ```
 
-This version of babel-plugin-tester:
-
-- Has a minimum Node version of `18.19.0`.
-
-- Optionally works with `jest@<=29` (as an optional peer dependency).
-
-- Works with `prettier@2` (as a dependency).
-
-### `babel-plugin-tester@12`
-
-```shell
-npm install --save-dev babel-plugin-tester@12.0.0-canary.2
-# May require --force in some situations:
-#npm install --save-dev babel-plugin-tester@12.0.0-canary.2 jest-extended
-#npm install --save-dev --force jest@30.0.0-alpha.6
-```
-
-> [!TIP]
->
-> Check [the registry][1] for the latest canary version number.
-
-This version of babel-plugin-tester:
-
-- Technically has a minimum Node version of `20.18.0`, but likely works with
-  `node@18`.
-
-- Optionally works with `jest@>=30` (as an optional peer dependency).
-
-> [!CAUTION]
->
-> You may need `--force` (i.e. `npm install ... --force`) if your project
-> depends on Jest ecosystem packages that don't yet recognize `jest@>=30`, such
-> as `jest-extended@<=4.0.2`.
-
-- Works with `prettier@3` (as a dependency).
-
-- Is stable and fully tested (despite the "canary" and "prerelease" monikers)
-  but cannot be released until `jest@30` is released.
-
 ## Usage
 
 To use babel-plugin-tester:
@@ -2283,7 +2236,6 @@ specification. Contributions of any kind welcome!
 [x-repo-pr-compare]: https://github.com/babel-utils/babel-plugin-tester/compare
 [x-repo-sponsor]: https://github.com/sponsors/Xunnamius
 [x-repo-support]: /.github/SUPPORT.md
-[1]: https://www.npmjs.com/package/babel-plugin-tester?activeTab=versions
 [2]:
   https://stackoverflow.com/questions/52798987/babel-7-fails-with-single-plugin-saying-duplicate-plugin-preset-detected
 [3]: https://babeljs.io/docs/en/presets