RUBY-3397 update the public key for signing gems (#2834)

Author: jamis

gem-public_cert.pem

@@ -1,7 +1,7 @@
 -----BEGIN CERTIFICATE-----
 MIIEeDCCAuCgAwIBAgIBATANBgkqhkiG9w0BAQsFADBBMREwDwYDVQQDDAhkYngt
 cnVieTEXMBUGCgmSJomT8ixkARkWB21vbmdvZGIxEzARBgoJkiaJk/IsZAEZFgNj
-b20wHhcNMjMwMTMxMTE1NjM1WhcNMjQwMTMxMTE1NjM1WjBBMREwDwYDVQQDDAhk
+b20wHhcNMjQwMjA5MTc0NzIyWhcNMjUwMjA4MTc0NzIyWjBBMREwDwYDVQQDDAhk
 YngtcnVieTEXMBUGCgmSJomT8ixkARkWB21vbmdvZGIxEzARBgoJkiaJk/IsZAEZ
 FgNjb20wggGiMA0GCSqGSIb3DQEBAQUAA4IBjwAwggGKAoIBgQC0/Veq9l47cTfX
 tQ+kHq2NOCwJuJGt1iXWQ/vH/yp7pZ/bLej7gPDl2CfIngAXRjM7r1FkR9ya7VAm
@@ -14,13 +14,13 @@ VYSiCHuc3yEDyq5M+98WGX2etbj6esYtzI3rDevpIAHPB6HQmtoJIA4dSl3gjFb+
 D+YQSuB2qYu021FI9zeY9sbZyWysEXBxhwrmTk+XUV0qz+OQZkMCAwEAAaN7MHkw
 CQYDVR0TBAIwADALBgNVHQ8EBAMCBLAwHQYDVR0OBBYEFH4nnr4tYlatU57RbExW
 jG86YM5nMB8GA1UdEQQYMBaBFGRieC1ydWJ5QG1vbmdvZGIuY29tMB8GA1UdEgQY
-MBaBFGRieC1ydWJ5QG1vbmdvZGIuY29tMA0GCSqGSIb3DQEBCwUAA4IBgQAVSlgM
-nFDWCCNLOCqG5/Lj4U62XoALkdCI+OZ30+WrA8qiRLSL9ZEziVK9AV7ylez+sriQ
-m8XKZKsCN5ON4+zXw1S+6Ftz/R4zDg7nTb9Wgw8ibzsoiP6e4pRW3Fls3ZdaG4pW
-+qMTbae9OiSrgI2bxNTII+v+1FcbQjOlMu8HPZ3ZfXnurXPgN5GxSyyclZI1QONO
-HbUoKHRirZu0F7JCvQQq4EkSuLWPplRJfYEeJIYm05zhhFeEyqea2B/TTlCtXa42
-84vxXsxGzumuO8F2Q9m6/p95sNhqCp0B/SkKXIrRGJ7FBzupoORNRXHviS2OC3ty
-4lwUzOlLTF/yO0wwYYfmtQOALQwKnW838vbYthMXvTjxB0EgVZ5PKto99WbjsXzy
-wkeAWhd5b+5JS0zgDL4SvGB8/W2IY+y0zELkojBMgJPyrpAWHL/WSsSBMuhyI2Pv
-xxaBVLklnJJ/qCCOZ3lG2MyVc/Nb0Mmq8ygWNsfwHmKKYuuWcviit0D0Tek=
+MBaBFGRieC1ydWJ5QG1vbmdvZGIuY29tMA0GCSqGSIb3DQEBCwUAA4IBgQBKGtHA
+fpi3N/BL1J5O4CBsAjtF4jHDiw2r5MwK+66NzMh3uedjgPI7MoosemLy++SB+8BR
+SE8bDkb6gfDQQzrI6KSXXyqH2TbQXpY5Tac7/yqXRiu8G2qOrOj4czB/Hq7j09CV
+YoH88v6hL11i5jt6jPjFh8hXYG0hDQxhi3atRz5Wwd98tUf2DSbyJXJiRgCBeZjl
+rP7AnKsWMu0C+zPlL+nXtQr+nTFtkKXRWfUJMqePpBqtriQvgQ+Y1ItqYVTSLuiM
+iwUMcn/rGhdCMBSaKDXdFkIveCHQE2f2WBo2EdErrcTrgEKYYdNfzcb/43j7L1kx
+AUwyTtk+HFrviBynQbKN82rjbZE+5gukVea5c7idQPkqacPYsoU37DI+hTlUyJkV
+dcTtfEg44lLlfNukBslfiQf54r+uWbyB0m0rDUN/py7/Ghyzt5GLBU91uCO3dGoI
+55uFRHMvEcJMTDeImC/nuucPCAiEGMHggr9+NPC0tqpxjGKTo7lS7GzUFjg=
 -----END CERTIFICATE-----