This is OK. This is the normal ca cert bundle. This is used for the github plugin to be able to download via https.
That ACCVRAIZ is some Spanish certificate authority as far as I know. You can also find that exact certificate in your normal windows certificate manager. Open certmgr.msc and look in Trusted root certification authorities, then certificates.
The ACCVRAIZ1 is not the only certificate in ca-bundle.crt, there are many root certificates in there. I don't know why the windows certificate showing thing is only showing the one certificate. There are many. Open the file in a text editor to see for yourself. This is expected.
That ca-bundle.crt is not used for signing the windows builds, so this is unrelated.