Update CHANGELOG.md

Author: triniwiz

CHANGELOG.md

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+## [1.1.5](https://github.com/nativescript/firebase/compare/1.1.6...1.1.5) (2022-03-21)
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+### Bug Fixes
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+* **firestore:** android write batch ([5a3b2a9](https://github.com/nativescript/firebase/commit/5a3b2a9289041c0c7749a21a20e501bae8a974cd))
+* **firestore:** ios date serialization ([0182618](https://github.com/nativescript/firebase/commit/0182618696efdd4e662cb6bb48cd2fe9c3334a3c))
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 ## [1.1.5](https://github.com/NativeScript/firebase/compare/1.1.4...1.1.5) (2022-03-21)