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

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https://hg.mozilla.org/integration/gaia-central/rev/6452986b4d70
Author: EragonJ (E.J.) <eragonj@eragonj.me>
Desc: Merge pull request #26756 from EragonJ/bug-1103805

Bug 1103805 - [Settings][Dialog] wifi_join_hidden should be shown as a d...

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https://hg.mozilla.org/integration/gaia-central/rev/16d991a667b5
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 1103805 - [Settings][Dialog] wifi_join_hidden should be shown as a dialog

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https://hg.mozilla.org/integration/gaia-central/rev/ab5cc56052f8
Author: Sean Lee <weilonge@gmail.com>
Desc: Merge pull request #26871 from weilonge/seanlee/STK/master/Bug1106450

Bug 1106450 - Fix the issue of multi-sim and missing cell object of connection. r=frsela

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https://hg.mozilla.org/integration/gaia-central/rev/88ef19118772
Author: Sean Lee <seanlee@Seans-MacBook-Pro.local>
Desc: Bug 1106450
1. Use icc.getConnection to get a connection for multi-sim cases.
2. Send STK_RESULT_PRFRMD_LIMITED_SERVICE when there is no cell object
of connection during handling STK_CMD_PROVIDE_LOCAL_INFO command.
Bumping manifests a=b2g-bump