Update certificates to expire in 2029
Update certificates that expire on 2021, to prolong their validity,
to make tests pass three years ahead.
diff --git a/tests/data_files/enco-cert-utf8str.pem b/tests/data_files/enco-cert-utf8str.pem
index 7d613d9..fb4947a 100644
--- a/tests/data_files/enco-cert-utf8str.pem
+++ b/tests/data_files/enco-cert-utf8str.pem
@@ -1,13 +1,14 @@
-----BEGIN CERTIFICATE-----
-MIIB8jCCAVugAwIBAgIETZt8+zANBgkqhkiG9w0BAQUFADBCMUAwPgYDVQQDDDdP
-cGVuVlBOIFdlYiBDQSAyMDExLjA0LjA1IDIwOjMzOjI3IFVUQyBhc2RlbW8ueW9u
-YW4ubmV0MB4XDTE0MDcyOTAzNTMzM1oXDTI0MDgwMjAzNTMzM1owFzEVMBMGA1UE
-AwwMZHcueW9uYW4ubmV0MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDHYW8q
-ZZ/HIIlU8j/YIyTh3h59JcJF0Es7RsPg25QVJkDkfhMn6l15f2neB2KPLKxCLpLD
-ozYD4s/If8aq74A1C2vvOLo/Gq1erNS4b9IS5xLs3Lu643XGxS93Rf6jrsGa8lfb
-Wa7DsQrp7FLT5GApwCp6CebmZq7jEImj0pDFRwIDAQABoyAwHjAJBgNVHRMEAjAA
-MBEGCWCGSAGG+EIBAQQEAwIGQDANBgkqhkiG9w0BAQUFAAOBgQAS1Ulo7iBABpm/
-S23mCnIFRY1+eFfYg4h8EiK9f8kWDwduXSYGVUqRHqh4LcNSdTOIaSEG4RGyV/EA
-5RfTviaQ9PxPiSFegNja8/aHel/nORfsEk4rwBCPGKDveL5KYhAtyAs865ZzLtv+
-kEkfhaTgrBIikwlnquoX5UHOdL/iaw==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-----END CERTIFICATE-----