Update dependency moment.js to v2.25.1

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
moment.js (source)	patch	2.25.0 -> 2.25.1

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Release Notes

moment/moment

### [`v2.25.1`](https://togithub.com/moment/moment/blob/master/CHANGELOG.md#​2251) [Compare Source](https://togithub.com/moment/moment/compare/2.25.0...2.25.1) - Release May 1, 2020 This is a quick patch release to address some of the issues raised after releasing 2.25.0. - [2e268635](https://togithub.com/moment/moment/commit/2e268635) [misc] Revert [#​5269](https://togithub.com/moment/moment/issues/5269) due to webpack warning - [226799e1](https://togithub.com/moment/moment/commit/226799e1) [locale] fil: Fix metadata comment - [a83a521](https://togithub.com/moment/moment/commit/a83a521) [bugfix] Fix typeoff usages - [e324334](https://togithub.com/moment/moment/commit/e324334) [pkg] Add ts3.1-typings in npm package - [28cc23e](https://togithub.com/moment/moment/commit/28cc23e) [misc] Remove deleted generated locale en-SG

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