If you have root level access, you might be able to check through the following command:
curl --help all | grep -- --tlsv
You should get some output that looks like:
-1, --tlsv1 Use TLSv1.0 or greater
--tlsv1.0 Use TLSv1.0 or greater
--tlsv1.1 Use TLSv1.1 or greater
--tlsv1.2 Use TLSv1.2 or greater
--tlsv1.3 Use TLSv1.3 or greater
If you don't see a line in there about TLS 1.2, you're most likely going to have a problem. There can be multiple lines, as TLS will negotiate to use the highest version that both sides have. But if TLS 1.2 does not exist, game over.