Restore didx509 time validation, update test's sample SNP report (#5888)

src/node/uvm_endorsements.h

@@ -282,11 +282,7 @@ namespace ccf
 
     const auto& did = phdr.iss;
 
-    auto did_document_str = didx509::resolve(
-      pem_chain,
-      did,
-      true // Ignore time validation (allow expired certs)
-    );
+    auto did_document_str = didx509::resolve(pem_chain, did);
     did::DIDDocument did_document = nlohmann::json::parse(did_document_str);
 
     if (did_document.verification_method.empty())