Upgrade graphql servlet to 9.0.1 to fix content length issue

Author: oliemansm

gradle.properties

@@ -17,7 +17,7 @@
 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 #
 
-version = 6.1.0-SNAPSHOT
+version = 6.0.1
 
 PROJECT_GROUP = com.graphql-java-kickstart
 PROJECT_NAME = graphql-spring-boot
@@ -41,7 +41,7 @@ LIB_GRAPHQL_JAVA_VER = 13.0
 LIB_JUNIT_VER = 4.12
 LIB_SPRING_CORE_VER = 5.2.1.RELEASE
 LIB_SPRING_BOOT_VER = 2.2.1.RELEASE
-LIB_GRAPHQL_SERVLET_VER = 9.0.0
+LIB_GRAPHQL_SERVLET_VER = 9.0.1
 LIB_GRAPHQL_JAVA_TOOLS_VER = 5.7.1
 LIB_COMMONS_IO_VER = 2.6
 kotlin.version=1.3.31