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

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https://hg.mozilla.org/integration/gaia-1_4/rev/54f8fd810ddc
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #21093 from chuck-lee/bug-1010252_reconnect_issue_1.4

Bug 1010252 - Only forget connectingfail network triggered by user. r=ejchen a=1.3+

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https://hg.mozilla.org/integration/gaia-1_4/rev/aee7c057481b
Author: Chuck Lee <chulee@mozilla.com>
Desc: Bug 1010252 - Only forget connectingfail network triggered by user. r=ejchen a=1.3+
Bumping manifests a=b2g-bump