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/test-ca-sha1.crt b/tests/data_files/test-ca-sha1.crt
index 7cb35d4..7a17822 100644
--- a/tests/data_files/test-ca-sha1.crt
+++ b/tests/data_files/test-ca-sha1.crt
@@ -1,7 +1,7 @@
 -----BEGIN CERTIFICATE-----
 MIIDhzCCAm+gAwIBAgIBADANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER
 MA8GA1UECgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0EwHhcN
-MTcwNTA0MTY1NzAxWhcNMjcwNTA1MTY1NzAxWjA7MQswCQYDVQQGEwJOTDERMA8G
+MTkwMzEyMTIwNDU5WhcNMjkwMzEyMTIwNDU5WjA7MQswCQYDVQQGEwJOTDERMA8G
 A1UECgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0EwggEiMA0G
 CSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDA3zf8F7vglp0/ht6WMn1EpRagzSHx
 mdTs6st8GFgIlKXsm8WL3xoemTiZhx57wI053zhdcHgH057Zk+i5clHFzqMwUqny
@@ -12,10 +12,10 @@
 gZUwgZIwHQYDVR0OBBYEFLRa5KWz3tJS9rnVppUP6z68x/3/MGMGA1UdIwRcMFqA
 FLRa5KWz3tJS9rnVppUP6z68x/3/oT+kPTA7MQswCQYDVQQGEwJOTDERMA8GA1UE
 CgwIUG9sYXJTU0wxGTAXBgNVBAMMEFBvbGFyU1NMIFRlc3QgQ0GCAQAwDAYDVR0T
-BAUwAwEB/zANBgkqhkiG9w0BAQUFAAOCAQEAfDd5khSv/+K3De9qmH/ID3CVapGS
-EN5MlXS5vvGCjZSA41MuXkUl11akKHXQ9aLlp85OZUdGbfQ5wwCoj/MymbT4fES2
-1dI8O1oI3PZI/0dqEvQETlIwSoZV2c/oaPRfh2E99v2+8FNIaZOfV2MX1n9+6AdO
-W2nlK2oklozXSYg6KWtISr8N8Ofew2LQ9+riFlrrdaxsr8CoJqPqMDTq7FUmkDmO
-oHize/h9bFksIunKoVQHa8P4w/W9bnR69nziyhZotbwOOkAWVnIyEM9QnaKWXeIy
-rP6ewcTQjNYkguHJ8RY9rW+5bdaSY4EljSqZ3P3F+zo8P6sVi3qSlai5lQ==
+BAUwAwEB/zANBgkqhkiG9w0BAQUFAAOCAQEAYDDFsUzrjOj/QoyuUeW1s1O/30pl
+HjDAbIroaTR4xUYQEjL6GCOMV9q51Sq5epTMk4ElbGZckMZvtnsKdDqzc1io9Ke+
++NeKyhXpCx34FVAzBl8ywfwLt20qbzAlTeqHQiOeCUldRqZet4qLmae8bivCCP0V
+0rt7xaV6nxQWmyqX2eCSNexMFDUdhCMo6rXXKvh7CwFhEwIENtRsOeUO2iFViXL1
+Iq0myvt3Fg9nsVfrcVJmlalXxvBjaz/bO4l77E6gJE1Zk9FdbjvALnkUJZwpo+yE
+Flue8ljNjMTVMbGZBHSJHjnBLp3bbasETkUOt8NRbAwI43M4E8upX17V6g==
 -----END CERTIFICATE-----