chore(internal): bump mock server version to ~5.8.0 (#369)

Author: stainless-app[bot]

scripts/mock

@@ -21,7 +21,7 @@ echo "==> Starting mock server with URL ${URL}"
 
 # Run prism mock on the given spec
 if [ "$1" == "--daemon" ]; then
-  npm exec --package=@stoplight/prism-cli@~5.3.2 -- prism mock "$URL" &> .prism.log &
+  npm exec --package=@stoplight/prism-cli@~5.8 -- prism mock "$URL" &> .prism.log &
 
   # Wait for server to come online
   echo -n "Waiting for server"
@@ -37,5 +37,5 @@ if [ "$1" == "--daemon" ]; then
 
   echo
 else
-  npm exec  --package=@stoplight/prism-cli@~5.3.2 -- prism mock "$URL"
+  npm exec  --package=@stoplight/prism-cli@~5.8 -- prism mock "$URL"
 fi