Merge pull request #1583 from peterbecich/optparse-constraint

raise `optparse-applicative` upper bound

Author: Kleidukos

haddock-library/haddock-library.cabal

@@ -116,7 +116,7 @@ test-suite fixtures
     , base-compat           ^>= 0.12.0
     , directory             ^>= 1.3.0.2
     , filepath              ^>= 1.4.1.2
-    , optparse-applicative  ^>= 0.15
+    , optparse-applicative  >= 0.15
     , tree-diff             ^>= 0.2 || ^>= 0.3
 
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