python-sip: update to 4.14.6:

This bugfix-release for python-sip includes versions 4.14.4, 4.14.5 and 4.14.6.
There is no detailed changelog available.
python-sip 4.14.4 includes an potential incompatibility in the use of the %VirtualErrorHandler directive.
python-sip 4.14.5 is a minor bugfix release, specifically for QGIS

Fixed bugs
bnc#812130
Update sip to 4.14.5
Selected Binaries
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