Increase PDB test timeout to 150s (#2590)

It looks like this test can time out sometimes because deleting the
namespace can take a bit of time. We don't really gain anything from
having this lower, as we always need to wait for all these test suites,
and each runs concurrently.

kuttl-test-pdb.yaml

@@ -3,4 +3,4 @@ kind: TestSuite
 artifactsDir: ./tests/_build/artifacts/
 testDirs:
   - ./tests/e2e-pdb/
-timeout: 30
+timeout: 150