Update Mozilla CA certificate store to latest (07-22-2020) for libgit2 SSL.

[mikhail-j]

@staticfloat

The curl project has updated the Mozilla CA certificate store earlier last week (07/22/2020).

This update coincides with CA certificate list changes to Mozilla NSS 3.54.

4 CA certificates were added:

• Microsoft ECC Root Certificate Authority 2017
• Microsoft RSA Root Certificate Authority 2017
• e-Szigno Root CA 2017
• certSIGN Root CA G2

4 CA certificates were removed:

• Verisign Class 3 Public Primary Certification Authority - G3
• AddTrust External Root
• Staat der Nederlanden Root CA - G2
• LuxTrust Global Root 2

In addition, the curl project specifies that the CA certificate store file was changed on 06/24/2019 with 138 certificates from the previous 138 certificates in January 2020.

However, using the diff tool generated the following output:

--- cacert-2020-01-01.pem	2020-07-28 07:04:58.284267941 -0400
+++ cacert-2020-06-24.pem	2020-07-28 07:04:31.343974510 -0400
@@ -1,7 +1,7 @@
 ##
 ## Bundle of CA Root Certificates
 ##
-## Certificate data from Mozilla as of: Wed Jan  1 04:12:10 2020 GMT
+## Certificate data from Mozilla as of: Wed Jun 24 03:12:10 2020 GMT
 ##
 ## This is a bundle of X.509 certificates of public Certificate Authorities
 ## (CA). These were automatically extracted from Mozilla's root certificates
@@ -13,8 +13,8 @@
 ## an Apache+mod_ssl webserver for SSL client authentication.
 ## Just configure this file as the SSLCACertificateFile.
 ##
-## Conversion done with mk-ca-bundle.pl version 1.27.
-## SHA256: f3bdcd74612952da8476a9d4147f50b29ad0710b7dd95b4c8690500209986d70
+## Conversion done with mk-ca-bundle.pl version 1.28.
+## SHA256: 5796295533cad5a648a20a115b0894dc9b318c41501796e7158e824c323f11c3
 ##

[staticfloat]

Thanks @mikhail-j! Man, this is really the kind of thing I'd like to be able to create a bot to do, I'm glad you've been doing it so faithfully so far!