west: update requirements.txt to avoid west 0.6.1

Update scripts/requirements.txt to use 0.6.2 or later (avoiding 0.6.1
that has an known issue)

Signed-off-by: David B. Kinder <[email protected]>

Author: dbkinder

scripts/requirements.txt

@@ -18,7 +18,7 @@ sphinx==1.7.5
 sphinx_rtd_theme
 sphinx-tabs
 sphinxcontrib-svg2pdfconverter
-west>=0.6.0
+west>=0.6.2
 wheel==0.30.0
 # "win32" is used for 64-bit Windows as well
 windows-curses; sys_platform == "win32"