Use new solar wind png instead of old gif

[jeanconn]

Description

Update jobwatch to pay attention to the new file name for the solar wind data.

Interface impacts

No impact.

Testing

Unit tests

• Linux

Functional tests

For functional tests, I confirmed the solar wind warning goes away with the new code using the new timestamp on the new file.

[javierggt]

The change seems trivial, so I have nothing to say, as long as you tested it and that is the correct filename.

I did go check that the png file has a more recent timestamp though.

[jeanconn]

I don't remember if I functionally tested. I'll go check to see if I remember how to do that.

[jeanconn]

I did the functional testing. I also thought this was too trivial to bother but just went back and did that anyway. Not sure if I'm allowed to delete the unit tests done by another reviewer though. Still seems too trivial for that. @taldcroft ?

[jeanconn]

I'm going to chuck the requirement for independent reviewer run of the unit tests in this case.