pycountry release 26.2.16+ds1-1 for unstable

[dgit distro=debian split --quilt=gbp]
[dgit please-upload source=pycountry version=26.2.16+ds1-1 upstream-tag=upstream/26.2.16+ds1 upstream=2c99a09d98ea52eda66f2b767c6ed871aba94c69]