v0.9.7: doi2bib3 update for various bugfixes

https://github.com/archisman-panigrahi/doi2bib3/tree/v1.6.0, https://github.com/archisman-panigrahi/doi2bib3/tree/v1.6.1, https://github.com/archisman-panigrahi/doi2bib3/tree/v1.6.2, https://github.com/archisman-panigrahi/doi2bib3/tree/v1.6.3

Full Changelog: v0.9.6...v0.9.7