Checksum file has wrong path

[JohnPeacock]

If you download the lastest firmware and checksum, it's annoying to verify the signature:

$ sha256sum -c solo2-firmware-2.964.0.sha2
sha256sum: /tmp/tmp.eqbNa0hHl1/app.sb2: No such file or directory
/tmp/tmp.eqbNa0hHl1/app.sb2: FAILED open or read
sha256sum: WARNING: 1 listed file could not be read

I was not able to figure out a way to override the path in the checksum file, so I did this:

$ diff solo2-firmware-2.964.0.sha2*
--- solo2-firmware-2.964.0.sha2	2022-09-10 13:04:06.658739258 -0400
+++ solo2-firmware-2.964.0.sha2.fixed	2022-09-10 13:02:31.270473866 -0400
@@ -1 +1 @@
-2d0ad808d9ba5a7b566a1136967d851cdcf9ee7494c02756dccdb724bddb92e3  /tmp/tmp.eqbNa0hHl1/app.sb2
+2d0ad808d9ba5a7b566a1136967d851cdcf9ee7494c02756dccdb724bddb92e3  solo2-firmware-2.964.0.sb2

And it now passed. It shouldn't be really that hard to fix whatever CI process is generating those files to DTRT.