Support 8.10.6

ghc-api-compat.cabal

 name:                ghc-api-compat
-version:             8.10.5
+version:             8.10.6
 synopsis:            GHC-API compatibility helpers
 description:
    GHC codebase is a moving target. This package provides
@@ -18,7 +18,8 @@ source-repository head
 
 library
    build-depends:
-      ghc == 8.10.5, base < 5.0
+      ghc == 8.10.5 || == 8.10.6
+      , base < 5.0
    default-language:    Haskell2010
 
    reexported-modules: