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

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https://hg.mozilla.org/integration/gaia-2_1/rev/e4cc2ed8d8fb
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #25082 from evanxd/bug-1075455-v2.1

Bug 1075455 - Sync present date on month view. r=evanxd

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https://hg.mozilla.org/integration/gaia-2_1/rev/9b1f3f641983
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1075455 - Sync present date on month view
Bumping manifests a=b2g-bump