fix(deps): update module github.com/vektah/gqlparser/v2 to v2.2.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/vektah/gqlparser/v2	require	minor	v2.1.0 -> v2.2.0

---

Release Notes

vektah/gqlparser

v2.2.0

Compare Source

Added

• Support for directives on variable definitions (#​135)
• Support for repeated directives, as per latest GraphQL spec (#​148)
• gqlerror.List now meets the go 1.13 error interfaces for Is and As (#​147)
• Support for coercing single value list inputs to lists of one element (#​138)
• Support for VARIABLE_DEFINITION executable directive (#​151)

Updated

• Improved formatting of block comments on args (#​124)
• Aligned root type inference more closely to the spec (#​144)

Fixed

• Ensure directives are only used in accordance with their definitions (#​132) (#​150)
• Fixed issue where default values were not considered when validating fields (#​122)

Thanks to everyone who contributed to this release!

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.