update handing of fractional seconds in ocean surface wind converter,
there are different lengths of the fractional seconds which with the string extraction method didn't work correctly, this fixes that
also functionally do a floor of the seconds to handle cases where too many digits are provided in the fractional seconds and this also cased issues with datetime ptime function
Issue(s) addressed
Resolves #1487
Checklist
[x] I have performed a self-review of my own code
[x] I have run the unit tests before creating the PR
Description
jedi-ci-build-cache=skip
update handing of fractional seconds in ocean surface wind converter,
there are different lengths of the fractional seconds which with the string extraction method didn't work correctly, this fixes that
also functionally do a floor of the seconds to handle cases where too many digits are provided in the fractional seconds and this also cased issues with datetime ptime function
Issue(s) addressed
Resolves #1487
Checklist