feat: unlockLockable mutation (#65)

schema.graphql

@@ -3297,6 +3297,9 @@ type Mutation {
   # Submits a pending pull request review.
   submitPullRequestReview(input: SubmitPullRequestReviewInput!): SubmitPullRequestReviewPayload
 
+  # Unlock a lockable object
+  unlockLockable(input: UnlockLockableInput!): UnlockLockablePayload
+
   # Updates an existing project.
   updateProject(input: UpdateProjectInput!): UpdateProjectPayload
 
@@ -7763,6 +7766,24 @@ type UnlabeledEvent implements Node {
   labelable: Labelable!
 }
 
+# Autogenerated input type of UnlockLockable
+input UnlockLockableInput {
+  # A unique identifier for the client performing the mutation.
+  clientMutationId: String
+
+  # ID of the issue or pull request to be unlocked.
+  lockableId: ID!
+}
+
+# Autogenerated return type of UnlockLockable
+type UnlockLockablePayload {
+  # A unique identifier for the client performing the mutation.
+  clientMutationId: String
+
+  # The item that was unlocked.
+  unlockedRecord: Lockable
+}
+
 # Represents an 'unlocked' event on a given issue or pull request.
 type UnlockedEvent implements Node {
   # Identifies the actor who performed the event.