Pin to exactly eventlog2hmtl 0.9.3

client/ghc-debug-client.cabal

@@ -51,7 +51,7 @@ library
                        bitwise ^>= 1.0,
                        hashable >= 1.3 && < 1.5,
                        mtl ^>= 2.2,
-                       eventlog2html >= 0.9.3,
+                       eventlog2html == 0.9.3,
                        binary ^>= 0.8,
                        psqueues ^>= 0.2,
                        dom-lt ^>= 0.2,