Make build timezone independent

contrib/build-wine/build-electrum-git.sh

@@ -69,7 +69,7 @@ wine "C:/python$PYTHON_VERSION/scripts/pyinstaller.exe" --noconfirm --ascii --na
 
 # set timestamps in dist, in order to make the installer reproducible
 pushd dist
-find  -type f  -exec touch -d '2000-01-1 18:00:16' {} +
+find  -type f  -exec touch -d '2000-11-11T11:11:11+00:00' {} +
 popd
 
 # build NSIS installer

contrib/build-wine/build.sh

@@ -15,7 +15,7 @@ $here/prepare-hw.sh || exit 1
 echo "Resetting modification time in C:\Python..."
 # (Because of some bugs in pyinstaller)
 pushd /opt/wine64/drive_c/python*
-find -type f -exec touch -d '2000-11-11 11:11:11' {} +
+find -type f -exec touch -d '2000-11-11T11:11:11+00:00' {} +
 popd
 ls -l /opt/wine64/drive_c/python*