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

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https://hg.mozilla.org/integration/gaia-central/rev/3445935a18d4
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #21559 from chuck-lee/bug-1019146

Bug 1019146 - Set default EAP mode in FTU to PEAP. r=fcampo a=2.0+

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https://hg.mozilla.org/integration/gaia-central/rev/7d934ad460cf
Author: Chuck Lee <chulee@mozilla.com>
Desc: Bug 1019146 - Set default EAP mode in FTU to PEAP. r=fcampo a=2.0+

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https://hg.mozilla.org/integration/gaia-central/rev/fa60794b0d0a
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #21636 from DouglasSherk/1030912-dialer-bluetooth-icon2

Bug 1030912 - Make BluetoothHelper listen for mozBluetooth events. r=ianliu

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https://hg.mozilla.org/integration/gaia-central/rev/ccb7713972ec
Author: DouglasSherk <github@sherk.me>
Desc: Bug 1030912 - Make BluetoothHelper listen for mozBluetooth events. r=ianliu
Bumping manifests a=b2g-bump