openssl@3: add HTTP mirror

[carlocab]

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This is needed for use as a dependency of curl. See #133144.

[Bo98]

This should probably have the /old/ URLs too if it's going to be used in something as important as curl.

[carlocab]

I tried the /old/ URLs with 3.1.0 and they didn't seem to work though.

[Bo98]

Works fine for me? https://www.openssl.org/source/old/3.1/openssl-3.1.0.tar.gz

[carlocab]

Hmmm, odd. Not sure why that didn't work for me earlier. #133436