add AWS public certificates for me-central-1 and ap-southeast-3

As per https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/verify-signature.html

authority/provisioner/aws.go

@@ -73,6 +73,12 @@ const awsMetadataTokenTTLHeader = "X-aws-ec2-metadata-token-ttl-seconds" //nolin
 // The fifth certificate is used in:
 //
 //	me-south-1
+// The sixth certificate is used in:
+//
+//	me-central-1
+// The seventh certificate is used in:
+//
+//	ap-southeast-3
 const awsCertificate = `-----BEGIN CERTIFICATE-----
 MIIDIjCCAougAwIBAgIJAKnL4UEDMN/FMA0GCSqGSIb3DQEBBQUAMGoxCzAJBgNV
 BAYTAlVTMRMwEQYDVQQIEwpXYXNoaW5ndG9uMRAwDgYDVQQHEwdTZWF0dGxlMRgw
@@ -154,6 +160,34 @@ DAYDVR0TBAUwAwEB/zANBgkqhkiG9w0BAQsFAAOBgQBhkNTBIFgWFd+ZhC/LhRUY
 4OjEiykmbEp6hlzQ79T0Tfbn5A4NYDI2icBP0+hmf6qSnIhwJF6typyd1yPK5Fqt
 NTpxxcXmUKquX+pHmIkK1LKDO8rNE84jqxrxRsfDi6by82fjVYf2pgjJW8R1FAw+
 mL5WQRFexbfB5aXhcMo0AA==
+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
+-----BEGIN CERTIFICATE-----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 -----END CERTIFICATE-----`
 
 // awsSignatureAlgorithm is the signature algorithm used to verify the identity