chore: update test name (#2384)

Addressing dailydotdev/daily#1533

It turns out the character count update was already included in this PR:
#2374. Only the test was
missing.

Co-authored-by: Chris Bongers <[email protected]>

__tests__/posts.ts

@@ -3355,7 +3355,7 @@ describe('mutation editPost', () => {
     );
   });
 
-  it('should return an error if content exceeds 4000 characters', async () => {
+  it('should return an error if content exceeds 10000 characters', async () => {
     loggedUser = '1';
 
     const content = 'Hello World! Start your squad journey here'; // 42 chars