Bump github.com/vektah/gqlparser/v2 in /integration-tests

Bumps [github.com/vektah/gqlparser/v2](https://github.com/vektah/gqlparser) from 2.5.11 to 2.5.15.
- [Release notes](https://github.com/vektah/gqlparser/releases)
- [Commits](vektah/gqlparser@v2.5.11...v2.5.15)

---
updated-dependencies:
- dependency-name: github.com/vektah/gqlparser/v2
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

integration-tests/go.mod

@@ -442,7 +442,7 @@ require (
 	github.com/ugorji/go/codec v1.2.12 // indirect
 	github.com/umbracle/fastrlp v0.0.0-20220527094140-59d5dd30e722 // indirect
 	github.com/valyala/fastjson v1.4.1 // indirect
-	github.com/vektah/gqlparser/v2 v2.5.11 // indirect
+	github.com/vektah/gqlparser/v2 v2.5.15 // indirect
 	github.com/wk8/go-ordered-map/v2 v2.1.8 // indirect
 	github.com/x448/float16 v0.8.4 // indirect
 	github.com/xlab/treeprint v1.2.0 // indirect

integration-tests/go.sum

@@ -1579,8 +1579,8 @@ github.com/valyala/bytebufferpool v1.0.0/go.mod h1:6bBcMArwyJ5K/AmCkWv1jt77kVWyC
 github.com/valyala/fastjson v1.4.1 h1:hrltpHpIpkaxll8QltMU8c3QZ5+qIiCL8yKqPFJI/yE=
 github.com/valyala/fastjson v1.4.1/go.mod h1:nV6MsjxL2IMJQUoHDIrjEI7oLyeqK6aBD7EFWPsvP8o=
 github.com/valyala/fasttemplate v1.0.1/go.mod h1:UQGH1tvbgY+Nz5t2n7tXsz52dQxojPUpymEIMZ47gx8=
-github.com/vektah/gqlparser/v2 v2.5.11 h1:JJxLtXIoN7+3x6MBdtIP59TP1RANnY7pXOaDnADQSf8=
-github.com/vektah/gqlparser/v2 v2.5.11/go.mod h1:1rCcfwB2ekJofmluGWXMSEnPMZgbxzwj6FaZ/4OT8Cc=
+github.com/vektah/gqlparser/v2 v2.5.15 h1:fYdnU8roQniJziV5TDiFPm/Ff7pE8xbVSOJqbsdl88A=
+github.com/vektah/gqlparser/v2 v2.5.15/go.mod h1:WQQjFc+I1YIzoPvZBhUQX7waZgg3pMLi0r8KymvAE2w=
 github.com/vultr/govultr/v2 v2.17.2 h1:gej/rwr91Puc/tgh+j33p/BLR16UrIPnSr+AIwYWZQs=
 github.com/vultr/govultr/v2 v2.17.2/go.mod h1:ZFOKGWmgjytfyjeyAdhQlSWwTjh2ig+X49cAp50dzXI=
 github.com/wk8/go-ordered-map/v2 v2.1.8 h1:5h/BUHu93oj4gIdvHHHGsScSTMijfx5PeYkE/fJgbpc=