Build jsaddle with GHC-8.8

Closes haskell-servant/servant#1227

Author: phadej

servant-jsaddle.cabal

@@ -22,7 +22,7 @@ category:           Servant, Web
 build-type:         Simple
 cabal-version:      >=1.10
 tested-with:
-    GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5
+    GHC ==8.0.2 || ==8.2.2 || ==8.4.4 || ==8.6.5 || ==8.8.1
   , GHCJS ==8.4
 
 homepage:           http://haskell-servant.readthedocs.org/
@@ -46,7 +46,7 @@ library
   -- Bundled with GHC: Lower bound to not force re-installs
   -- text and mtl are bundled starting with GHC-8.4
   build-depends:
-      base          >=4.9      && <4.13
+      base          >=4.9      && <4.14
     , bytestring    >=0.10.8.1 && <0.11
     , containers    >=0.5.7.1  && <0.7
     , mtl           >=2.2.2    && <2.3
@@ -60,10 +60,10 @@ library
   -- Strict dependency on `servant-client-core` as we re-export things.
   build-depends:    servant-client-core >=0.16 && <0.16.1
   build-depends:
-      base-compat         >=0.10.5  && <0.11
+      base-compat         >=0.10.5  && <0.12
     , case-insensitive    >=1.2.0.0 && <1.3
     , exceptions          >=0.10.0  && <0.11
-    , ghcjs-dom
+    , ghcjs-dom           >=0.9.4.0 && <0.10
     , http-media          >=0.7.1.3 && <0.9
     , http-types          >=0.12.2  && <0.13
     , jsaddle             >=0.9.6.0 && <0.10