This update for php-composer fixes the following issues:
Require php-mbstring as requested in boo#1187416
Version 1.10.22
Version 1.10.21
Version 1.10.20
Version 1.10.17
Version 1.10.16
Version 1.10.15
Version 1.10.14
Version 1.10.13
Version 1.10.12
Version 1.10.11
Version 1.10.10
Version 1.10.9
Version 1.10.8
Version 1.10.7
Version 1.10.6
Version 1.10.5
Version 1.10.4
Version 1.10.3
Version 1.10.2
Version 1.10.1
Version 1.10.0
Version 1.9.3
Version 1.9.2
Version 1.9.1
Version 1.9.0
Version 1.8.6