Homebrew pre-commit 2.21.0 (3.x.x breaks with existing .pre-commit-config.yaml)

pre-commit 2.21.0

```shell
$ brew tap-new $USER/local--pre-commit 
```

```shell
Initialized empty Git repository in /opt/homebrew/Library/Taps/henddher/homebrew-local--pre-commit/.git/
`.pre-commit-config.yaml` config file not found. Skipping `pre-commit`.
[main (root-commit) 5f52df2] Create henddher/local--pre-commit tap
 3 files changed, 90 insertions(+)
 create mode 100644 .github/workflows/publish.yml
 create mode 100644 .github/workflows/tests.yml
 create mode 100644 README.md
==> Created henddher/local--pre-commit
/opt/homebrew/Library/Taps/henddher/homebrew-local--pre-commit

When a pull request making changes to a formula (or formulae) becomes green
(all checks passed), then you can publish the built bottles.
To do so, label your PR as `pr-pull` and the workflow will be triggered.
```

```shell
file "$(brew --repo homebrew/core)"
```

*IF* 
```
/opt/homebrew/Library/Taps/homebrew/homebrew-core: cannot open `/opt/homebrew/Library/Taps/homebrew/homebrew-core' (No such file or directory)
```
*THEN*
```shell
brew tap homebrew/core
```
*FI*

```shell
brew extract --version=2.21.0 pre-commit $USER/local--pre-commit 
```

```shell
brew search pre-commit
==> Formulae
henddher/local--pre-commit/pre-commit@2.21.0     pre-commit ✔
```

*IF* 
```shell
pre-commit --version
```
```
pre-commit 3.2.2
```
*THEN*
```shell
brew unlink pre-commit 
```
```
Unlinking /opt/homebrew/Cellar/pre-commit/3.2.2... 1 symlinks removed.
```
*FI*

```shell
brew install pre-commit@2.21.0
```

```
brew link pre-commit@2.21.0
```

```shell
pre-commit --version
```
```
pre-commit 2.21.0
```

```shell
brew pin pre-commit@2.21.0
```

Refs:

https://github.com/orgs/Homebrew/discussions/4326

https://blog.sandipb.net/2021/09/02/installing-a-specific-version-of-a-homebrew-formula/

https://stackoverflow.com/questions/3987683/homebrew-install-specific-version-of-formula/9832084#9832084

Uninstall:

brew unpin pre-commit@2.21.0

brew uninstall pre-commit@2.21.0