tests: update lets encrypt real world EE test cert

* Updates the test cert for presently unknown reasons the previous EE
  cert is returning an error in the Android real world verification test
  suite that appears resolved by refreshing the EE cert.
* Updates the mock verification timestamp to be newer than the LE EE
  cert's NotBefore date.

rustls-platform-verifier/src/tests/mod.rs

@@ -58,6 +58,6 @@ pub fn assert_cert_error_eq<E: StdError + PartialEq + 'static>(
 /// we know the test certificates are valid. This must be updated if the mock certificates
 /// are regenerated.
 pub(crate) fn verification_time() -> pki_types::UnixTime {
-    // Wednesday, January 3, 2024 6:03:08 PM UTC
-    pki_types::UnixTime::since_unix_epoch(Duration::from_secs(1_704_304_988))
+    // Monday, March 11, 2024 8:30:25 PM UTC
+    pki_types::UnixTime::since_unix_epoch(Duration::from_secs(1_710_189_025))
 }