Log Message:
alex: update to 3.5.1.0.

## Changes in 3.5.1.0

* Drop generating output for GHC < 6.4.
* Use qualified imports in generated code (except for `Prelude`)
  ([Issue #258](https://github.com/haskell/alex/issues/258)).
* Suppress warnings `tabs` and `unused-imports` for generated code
  ([Issue #255](https://github.com/haskell/alex/issues/255)).
* Tested with GHC 8.0 - 9.8.2.

## Changes in 3.5.0.0

 * Add option `--numeric-version`.
 * Remove deprecated `-v` as alias for `--version`.
 * Add `-v` as placeholder for a future `--verbose` option.
 * Make `alex{G,S}etUserState` available with the `monadUserState-bytestring` wrapper
   ([Issue #220](https://github.com/haskell/alex/issues/220)).
 * Debugging lexer: print character in addition to its ASCII code
   ([PR #252](https://github.com/haskell/alex/pull/252)).
 * Tested with GHC 8.0 - 9.8.1.