Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

========

https://hg.mozilla.org/integration/gaia-central/rev/99e32210708f
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #21589 from azasypkin/bug-1034600-suggestions

Bug 1034600 - [Messages] Suggestions list is badly located. r=julien

========

https://hg.mozilla.org/integration/gaia-central/rev/4bf848ad0a51
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1034600 - [Messages] Suggestions list is badly located. r=julien

========

https://hg.mozilla.org/integration/gaia-central/rev/25a591f94398
Author: Carmen Jiménez <cjc@tid.es>
Desc: Merge pull request #20902 from mcjimenez/bug1015930_v2

Bug 1015930 - Configure single variant bookmarks on first insertion of a valid SIM (r=bfrancis)

========

https://hg.mozilla.org/integration/gaia-central/rev/5b17fe321186
Author: Carmen Jimenez Cabezas <cjc@tid.es>
Desc: Bug 1015930 - Configure single variant bookmarks on first insertion of a valid SIM
Bumping manifests a=b2g-bump