fwk: sunflower: bump to v3.06

BRANCH=fwk-sunflower-26784
BUG=Prepare for 3.06 MP release
TEST=Check version in ec console and bios settings

Signed-off-by: LeilaCY-Lin <LeilaCY_Lin@compal.com>

Author: LeilaCY-Lin

.github/workflows/zephyr-build.yml

@@ -30,7 +30,7 @@ jobs:
           # Marigold builder uses same folder for all
           # Not official release on track-upstream branch.
           # And need to use zephyr on track-upstream as well
-          { name: sunflower, folder: marigold1, ver: "3.0.5", sha_len: 7, zephyr_ref: "framework-main", cmsis_ref: "cros/chromeos-main" },
+          { name: sunflower, folder: marigold1, ver: "3.0.6", sha_len: 7, zephyr_ref: "framework-main", cmsis_ref: "cros/chromeos-main" },
           { name: marigold, folder: marigold1, ver: "0.0.0", sha_len: 7, zephyr_ref: "framework-main", cmsis_ref: "cros/chromeos-main" },
           # Lotus and Azalea official releases are NOT coming from this branch
           { name: lotus, folder: marigold1, ver: "0.0.0", sha_len: 7, zephyr_ref: "framework-main", cmsis_ref: "cros/chromeos-main" },