vault: fix error message

Signed-off-by: Vincenzo Scamporlino <vincenzos@spotify.com>

plugins/vault/src/api.test.ts

@@ -110,7 +110,7 @@ describe('api', () => {
 
   it('should throw an error if the Vault API responds with a non-successful HTTP status code', async () => {
     await expect(api.listSecrets('test/error')).rejects.toThrow(
-      'Request failed with 400 Error',
+      'Request failed with 400 Bad Request',
     );
   });
 });

plugins/vault/src/components/EntityVaultTable/EntityVaultTable.test.tsx

@@ -161,7 +161,7 @@ describe('EntityVaultTable', () => {
 
     expect(
       rendered.getByText(
-        /Unexpected error while fetching secrets from path \'test\/error\'\: Request failed with 400 Error/,
+        /Unexpected error while fetching secrets from path \'test\/error\'\: Request failed with 400 Bad Request/,
       ),
     ).toBeInTheDocument();
   });