Update Cabal submodule to fix Windows builds

The Cabal submodule has been updated to a version that has an incorrect fix for autoconf.

The given version sets PATH_SEPARATOR to ; forcibly which breaks use of older autoconf. This was fixed in https://github.com/haskell/cabal/pull/7652/files and released in Cabal 3.6.2.0.

It's also very important not to release a toolchain with Cabal 3.6.1.0.

Could the submodule be updated to this please.

Edited Dec 26, 2021 by Tamar Christina

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