Log Message:
devel/alex: update to alex-3.5.2.0

## Changes in 3.5.2.0

* Use `byteSwap16#` and `byteSwap32#` on big-endian architectures instead of
  handrolling the implementation
  ([PR #260](https://github.com/haskell/alex/pull/260)).
* More descriptive error in `alexScan`; inline `alexScanUser`
  ([PR #262](https://github.com/haskell/alex/pull/262)).
* Tested with GHC 8.0 - 9.12.1.