Add --fail-with-body to curl command

When the command gets an error response it still returns 0 if there is output.
With this flag it'll still return a non-zero status code even when it outputs
text, assuming that the server responds with something of 400 or higher.

.builds/readme.yml

@@ -22,6 +22,6 @@ tasks:
             "readme": .
           }
       }' < $readme \
-      | curl --oauth2-bearer <(~/.vc-p4-auth) \
+      | curl --fail-with-body --oauth2-bearer <(~/.vc-p4-auth) \
         -H "Content-Type: application/json" \
         -d@- https://git.sr.ht/query