Mark diagrams-core as broken due to ghc#20539

fea2790a · Ryan Scott · d303d951 · fea2790a
Commit fea2790a authored 3 years ago by Ryan Scott
--- a/ci/config.sh
+++ b/ci/config.sh
@@ -83,6 +83,7 @@ case $version in
  9.3.*)
    #       package                   ticket
    broken  "Agda"                    20294
+    broken  "diagrams-core"           20539
    broken  "doctest"                 30 # head.hackage#30, that is
    ;;