Add cabal changes to package.yaml

package.yaml

@@ -1,5 +1,5 @@
 name: servant-prometheus
-version: 1.2.0
+version: 1.3.0
 github: worm2fed/servant-prometheus
 synopsis: Helpers for using prometheus with servant
 description: Please see the README on GitHub at <https://github.com/worm2fed/servant-prometheus#readme>
@@ -102,6 +102,7 @@ tests:
       - hspec >= 2 && < 3
       - hspec-expectations-pretty-diff >= 0.7.2.2 && < 0.8
       - http-client >= 0.7.13 && < 0.8
+      - http-types >=0.12.4 && <0.13
       - prometheus-client
       - servant
       - servant-client >= 0.14 && < 0.20