Bump dependencies

- Bump `aeson` to 1.1
- Bump `directory` to 1.3
- Bump `haskell-src-exts` to 1.19

stylish-haskell.cabal

@@ -49,13 +49,13 @@ Library
     Paths_stylish_haskell
 
   Build-depends:
-    aeson            >= 0.6  && < 1.1,
+    aeson            >= 0.6  && < 1.2,
     base             >= 4.8  && < 5,
     bytestring       >= 0.9  && < 0.11,
     containers       >= 0.3  && < 0.6,
-    directory        >= 1.1  && < 1.3,
+    directory        >= 1.1  && < 1.4,
     filepath         >= 1.1  && < 1.5,
-    haskell-src-exts >= 1.18 && < 1.19,
+    haskell-src-exts >= 1.18 && < 1.20,
     mtl              >= 2.0  && < 2.3,
     syb              >= 0.3  && < 0.7,
     yaml             >= 0.7  && < 0.9
@@ -70,13 +70,13 @@ Executable stylish-haskell
     strict               >= 0.3  && < 0.4,
     optparse-applicative >= 0.12 && < 0.14,
     -- Copied from regular dependencies...
-    aeson            >= 0.6  && < 1.1,
+    aeson            >= 0.6  && < 1.2,
     base             >= 4.8  && < 5,
     bytestring       >= 0.9  && < 0.11,
     containers       >= 0.3  && < 0.6,
-    directory        >= 1.1  && < 1.3,
+    directory        >= 1.1  && < 1.4,
     filepath         >= 1.1  && < 1.5,
-    haskell-src-exts >= 1.18 && < 1.19,
+    haskell-src-exts >= 1.18 && < 1.20,
     mtl              >= 2.0  && < 2.3,
     syb              >= 0.3  && < 0.7,
     yaml             >= 0.7  && < 0.9
@@ -116,13 +116,13 @@ Test-suite stylish-haskell-tests
     test-framework       >= 0.4 && < 0.9,
     test-framework-hunit >= 0.2 && < 0.4,
     -- Copied from regular dependencies...
-    aeson            >= 0.6  && < 1.1,
+    aeson            >= 0.6  && < 1.2,
     base             >= 4.8  && < 5,
     bytestring       >= 0.9  && < 0.11,
     containers       >= 0.3  && < 0.6,
-    directory        >= 1.1  && < 1.3,
+    directory        >= 1.1  && < 1.4,
     filepath         >= 1.1  && < 1.5,
-    haskell-src-exts >= 1.18 && < 1.19,
+    haskell-src-exts >= 1.18 && < 1.20,
     mtl              >= 2.0  && < 2.3,
     syb              >= 0.3  && < 0.7,
     yaml             >= 0.7  && < 0.9