adding new workflow that tests develop branch of dependent libraries

[edwardhartnett]

Fixes #91

adding new workflow that tests develop branch of dependent libraries

[edwardhartnett]

@kgerheiser should grib_utils build with the current develop branch of ip?

It is failing to find a function. Is that because of the merge with ip2?

/usr/bin/ld: CMakeFiles/copygb.dir/copygb.F.o: in function `intgrib1_':
/home/runner/work/NCEPLIBS-grib_util/NCEPLIBS-grib_util/grib_utils/src/copygb/copygb.F:1222: undefined reference to `ipolates_'

[kgerheiser]

That's exactly what it is. You can use v3.3.3, or add use ip_mod for develop.

[edwardhartnett]

OK, so every NCEPLIBS library (and other user) that uses ip needs to change their build system to cope with this. ;-)

[kgerheiser]

Not the build system, but the actual code.

[edwardhartnett]

Right, but the build system also, because that use statement can't be used with older versions of ip.

So either the build system demands version 3.4.0 or greater, or uses a pre-processor flag and some ifdef magic to include the use statement only if version >= 3.4.0.

When are we going to release ip-3.4.0? Seems like we need to, so that grib_util and other utilities can test against the new way of doing ip.

[edwardhartnett]

OK, the ip problem still needs to be resolved, so I change ip to 3.3.0 in the CI. This PR is ready to merge.