Bump template-haskell version to 2.18.0.0

Type applications in patterns made a breaking change to the template-haskell API, and as a result, we need to bump the template-haskell version to 2.18 to reflect this change. Also, the libraries/template-haskell/changelog.md entry for type applications in patterns was incorrectly mentioned in the section for template-haskell-2.17.0.0, which is slated to be released with GHC 9.0.1, not with 9.2.1, which is when type applications in patterns will debut.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information