resources: Bump moment.js from 2.15.0 to 2.19.3
Languages and locales now with support:
- bm
- de-ch
- gom-latn
- gu
- kn
- sd
- tet
- ur
- uz-latn
- yo
Skipped languages because we don't support them in MW:
- ar-dz
- ar-kw
- ar-ly
- en-ie
- en-nz
- es-do
- es-us
- fr-ch
- me
- nl-be
- tlh
- tzl
Also drop 'x-pseudo' which was included but not used.
Bug: T161732
Bug: T181547
Change-Id: I7f89569c6ee6640d368af1378e84c5a9e725dad0