Update SimpleITK along release-4.13.2
Update SimpleITK along release-4.13.2

git log --oneline  v4.13.2..upstream/release-4.13
432dd1b9dc ENH: back-porting #1165 to support Visual Studio 2019
90ad651db4 BUG: Patch missing const qualifier to GDCM dircos_comp comparison
a47c974f64 COMP: a fix for non-system double-conversion build
ac26e1c55f Merge pull request #969 from dzenanz/release-4.13
3ee6f1e5c9 ENH: use double-conversion's CMake targets
a0922944b4 Merge pull request #911 from thewtex/4.13-vxl-gcc-9
9825d546c4 COMP: Add VXL support for GCC 9
c2cfd2b6d1 COMP: VtkGlue module-Provide support for VTK new cmake targets
38c6ca0d76 COMP: Prevent duplicate wrapping ouput file specification

blowekamp/SimpleITK,InsightSoftwareConsortium/SimpleITK,blowekamp/SimpleITK,SimpleITK/SimpleITK,SimpleITK/SimpleITK,InsightSoftwareConsortium/SimpleITK,InsightSoftwareConsortium/SimpleITK,richardbeare/SimpleITK,SimpleITK/SimpleITK,InsightSoftwareConsortium/SimpleITK,SimpleITK/SimpleITK,InsightSoftwareConsortium/SimpleITK,blowekamp/SimpleITK,InsightSoftwareConsortium/SimpleITK,richardbeare/SimpleITK,blowekamp/SimpleITK,InsightSoftwareConsortium/SimpleITK,blowekamp/SimpleITK,blowekamp/SimpleITK,richardbeare/SimpleITK,SimpleITK/SimpleITK,SimpleITK/SimpleITK,InsightSoftwareConsortium/SimpleITK,richardbeare/SimpleITK,SimpleITK/SimpleITK,richardbeare/SimpleITK,blowekamp/SimpleITK,SimpleITK/SimpleITK,richardbeare/SimpleITK,richardbeare/SimpleITK,richardbeare/SimpleITK,blowekamp/SimpleITK