Old certificate outdated, self-signed new one.

https://guides.rubygems.org/security/

certs/Eric-Guo.pem

@@ -1,21 +1,25 @@
 -----BEGIN CERTIFICATE-----
-MIIDeDCCAmCgAwIBAgIBATANBgkqhkiG9w0BAQUFADBBMRMwEQYDVQQDDAplcmlj
-Lmd1b2N6MRUwEwYKCZImiZPyLGQBGRYFZ21haWwxEzARBgoJkiaJk/IsZAEZFgNj
-b20wHhcNMTcwNzI1MDEwMDU1WhcNMTgwNzI1MDEwMDU1WjBBMRMwEQYDVQQDDApl
-cmljLmd1b2N6MRUwEwYKCZImiZPyLGQBGRYFZ21haWwxEzARBgoJkiaJk/IsZAEZ
-FgNjb20wggEiMA0GCSqGSIb3DQEBAQUAA4IBDwAwggEKAoIBAQDw/v3xTyrXOdzt
-0J3aFwBQ0mnDKW/E4INUekx4xzLnlCaGxZwUiv0tXfmXHPrCBjYcOYzA0viUNElO
-jPNn+LvcZsTsiYLai8sIBHeBGlGTKfnMFDXABhLUD0wafCcjKvhcxLzCkvBwQWO3
-sWukYhGTW1fPfUybWVRVtswwGIyqqLezKPbYTY56t7RCz1suv32ViAfg8kCSGoMz
-hgrp9FLSMKyeYW/LrA8adF+9NLotRleaec75INi+9JJJ190iJU27rwGE9iXOhpJS
-BUwYoduU3RJGwEr1HLmq20gZlTv5RKuQ91L4i7xDjmhJIVJTBoPNLXjE8dCJ/ZXs
-FmDSu7R5AgMBAAGjezB5MAkGA1UdEwQCMAAwCwYDVR0PBAQDAgSwMB0GA1UdDgQW
-BBSLMIsOJrcOkTsQvamhOVFJWD+ADDAfBgNVHREEGDAWgRRlcmljLmd1b2N6QGdt
-YWlsLmNvbTAfBgNVHRIEGDAWgRRlcmljLmd1b2N6QGdtYWlsLmNvbTANBgkqhkiG
-9w0BAQUFAAOCAQEA237a0TwFF52WZloXGIuH3O5ceswbp/A30UpHGZKHgtY3SWkZ
-c2F3wlYoGZvM8l9Ec+ZEobcxuvq7wU5BSI3PFTUpFkt7m5wD0PW8AP+pGY/d5kBn
-1AQAUJG4mGdKO3oWuWqs2TBFHuCgcNTGm00UMqnrV/tgI6iIoMWay/Y9R+0SAUJ+
-DxjKAQnkF0JBznatQrHLMmKznDiR3DfgDTte7o0pvMf9mQzs9D+im0EhoASWFE/i
-fGxGnQhzVaW07NKOCRrAZlrF8iqso4JR7Vm9bhFdzxUPLr70njwHLtDS2CHgo1VW
-1xAjN8ZXXpAmVv7V6cI9RTmQHPu/fFn+E0sG9w==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 -----END CERTIFICATE-----