Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/5b3e28e26406
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #23063 from evanxd/bug-1054178

 Bug 1054178 - [Gaia][calendar] support 24 hour time format r=millermedeiros

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https://hg.mozilla.org/integration/gaia-central/rev/903578d97f2c
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1054178 - [Gaia][calendar] support 24 hour time format r=millermedeiros
Bumping manifests a=b2g-bump