Testing fails on older systems: SSL certificate problem: certificate has expired

[ryandesign (Ryan Carsten Schmidt)]

Testing base fails on macOS 10.14 and other older OS versions:

SSL certificate problem: certificate has expired
    while executing
"curl fetch --enable-compression https://www.whatsmyip.org/http-compression-test/ $tempfile"
    (procedure "main" line 29)
    invoked from within
"main $argv"
    (file "./tests/curl.tcl" line 63)
make[2]: *** [test] Error 1
make[1]: *** [test] Error 1
make: *** [test] Error 1

[jmroot (Joshua Root)]

In 551f8164c384f770f0ef1e46fb10482b18964b27/macports-base (master):

Quick fix for http compression test

Closes: #64012