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

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https://hg.mozilla.org/integration/gaia-central/rev/3e745153c1b3
Author: Jan Keromnes <janx@linux.com>
Desc: Merge pull request #19167 from lhadji/1007568/copy-symlink

Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/eaf45a5b36c7
Author: Leila Hadji <leila.hadji@sonymobile.com>
Desc: Bug 1007568 - Follow symlinks when copying apps into STAGE_DIR, r=yurenju

Directories under GAIA_APPDIRS might contain symlinks
(e.g. outoftree_apps). When copying the symlinked apps
into STAGE_DIR without -L option, clear-stage-app
will remove the files in the target directory.
Bumping manifests a=b2g-bump