ui: support brick 0.47+ as well

I should have supported latest brick, to get into stackage nightly.
Now it does.

No upper bound, once again; responding lazily to brick API changes
seems less disruptive overall.

hledger-ui/Hledger/UI/Main.hs

@@ -230,8 +230,13 @@ runBrickUi uopts@UIOpts{cliopts_=copts@CliOpts{inputopts_=_iopts,reportopts_=rop
 
         -- and start the app. Must be inside the withManager block
 #if MIN_VERSION_vty(5,15,0)
-        let myVty = mkVty mempty
+        let mkvty = mkVty mempty
 #else
-        let myVty = mkVty def
+        let mkvty = mkVty def
+#endif
+#if MIN_VERSION_brick(0,47,0)
+        vty0 <- mkvty
+        void $ customMain vty0 mkvty (Just eventChan) brickapp ui
+#else
+        void $ customMain mkvty (Just eventChan) brickapp ui
 #endif
-        void $ customMain myVty (Just eventChan) brickapp ui

hledger-ui/package.yaml

@@ -81,7 +81,7 @@ when:
      buildable: false
    else:
      dependencies:
-       - brick >=0.23 && <0.47
+       - brick >=0.23
        - unix
        - vty >=5.5