Bump all LLVM versions to LLVM 15

Here we uniformly bump all LLVM versions to 15, and remove LLVM from images which don't support LLVM 15 (such as the alpine images)

components/HaskellTools.dhall

@@ -24,7 +24,6 @@ let
         --constraint='alex ^>= 3.2.7.3' \
         --constraint='happy ^>= 1.20' \
         --with-compiler=$GHC \
-        --enable-static \
         --install-method=copy \
         --installdir=${binDir} \
         --index-state=${hackageIndexState} \