GHC 8.9-related patches for barbies, inspection-testing, shakespeare, yesod-core

• barbies must adapt to GHC proposal 103 (https://github.com/ghc-proposals/ghc-proposals/blob/master/proposals/0103-no-kind-vars.rst), which has been implemented in 8.9.
• inspection-testing must adapt to changes in the GHC API.
• shakespeare and yesod-core must adapt to the type of TupE changing in template-haskell-2.16.0.0.