manifest: ci: edit sphinx/west python requirement versions

sphinx:2.4.0 released yesterday with a bug that breaks the build

setting sphinx !=2.4.0

setting west != 0.7.* temporarily

Signed-off-by: Thomas Stilwell <[email protected]>

Author: thst-nordic

west.yml

@@ -38,7 +38,7 @@ manifest:
     - name: zephyr
       repo-path: fw-nrfconnect-zephyr
       west-commands: scripts/west-commands.yml
-      revision: v2.1.99-ncs1-rc1
+      revision: 870fc37297cdb5a6e48782fc35d85a12d1f74675
     - name: segger
       revision: 6fcf61606d6012d2c44129edc033f59331e268bc
       path: modules/debug/segger