Update the 9.0.2 release used to 9.0.2a so profiling libs are included

Author: telser

stack/stack-setup-2.yaml

@@ -1122,7 +1122,7 @@ ghc:
             sha1: 51456ef7b49a413edded28e678535fb2f8d0e896
             sha256: 1fb8e27eeec51b4cdbfd1b3c16727adc5f77388d3e925e63799d8232647f316d
         9.0.2:
-            url: "http://downloads.haskell.org/~ghc/9.0.2/ghc-9.0.2-x86_64-fedora27-linux.tar.xz"
+            url: "http://downloads.haskell.org/~ghc/9.0.2/ghc-9.0.2a-x86_64-fedora27-linux.tar.xz"
             #mirror-url: "https://github.com/commercialhaskell/ghc/releases/download/ghc-9.0.2-release/ghc-9.0.2-x86_64-fedora27-linux.tar.xz"
             content-length: 122667728
             sha1: eaa7ba05a33082e7a4a3e547306cae719b7b5436