fixed introspection for schema description and specifiedByURL (#1986)

* fixed introspection for schema description and specifiedByURL

* updated to the master latest

* fixed Description resolver

* updated integration go file

* fixed codegen tests for the latest gqlparser

* updated go mod in example

* go generate

* skip specifiedBy

* regenerate

* fixed schema-expected.graphql for the latest

* fixed integration test to use latest tools

* fixed integration workflow

* use v2.4.0

* fixed sum

.github/workflows/check-integration

@@ -13,7 +13,7 @@ echo "### running jest integration spec"
 
 
 echo "### validating introspected schema"
-SERVER_URL=http://localhost:8080/query ./node_modules/.bin/graphql get-schema
+./node_modules/.bin/graphql-codegen
 
 if ! diff <(tail -n +3 schema-expected.graphql) <(tail -n +3 schema-fetched.graphql) ; then
     echo "The expected schema has changed, you need to update schema-expected.graphql with any expected changes"

TESTING.md

@@ -31,7 +31,7 @@ in another terminal
 ```bash
 cd integration
 npm install
-SERVER_URL=http://localhost:8080/query ./node_modules/.bin/graphql get-schema
+./node_modules/.bin/graphql-codegen
 ```
 
 will write the schema to `integration/schema-fetched.graphql`, compare that with `schema-expected.graphql`