fix: make client credential optional in authcode + pkce flow (#4114)

* fix: make client credential optional

* test: update test fixtures

---------

Co-authored-by: jamesgeorge007 <25279263+jamesgeorge007@users.noreply.github.com>

packages/hoppscotch-data/src/graphql/index.ts

@@ -4,6 +4,7 @@ import V1_VERSION from "./v/1"
 import V2_VERSION from "./v/2"
 import V3_VERSION from "./v/3"
 import V4_VERSION from "./v/4"
+import V5_VERSION from "./v/5"
 
 export { GQLHeader } from "./v/1"
 export {
@@ -13,23 +14,24 @@ export {
   HoppGQLAuthInherit,
 } from "./v/2"
 
-export { HoppGQLAuth } from "./v/4"
-export { HoppGQLAuthOAuth2 } from "./v/3"
+export { HoppGQLAuthOAuth2, HoppGQLAuth } from "./v/5"
+
 export { HoppGQLAuthAPIKey } from "./v/4"
 
-export const GQL_REQ_SCHEMA_VERSION = 4
+export const GQL_REQ_SCHEMA_VERSION = 5
 
 const versionedObject = z.object({
   v: z.number(),
 })
 
 export const HoppGQLRequest = createVersionedEntity({
-  latestVersion: 4,
+  latestVersion: 5,
   versionMap: {
     1: V1_VERSION,
     2: V2_VERSION,
     3: V3_VERSION,
     4: V4_VERSION,
+    5: V5_VERSION,
   },
   getVersion(x) {
     const result = versionedObject.safeParse(x)