Run "scripts/update-fuchsia-sdk.sh"

Roller-URL: https://ci.chromium.org/b/8828402966688625985
Cq-Cl-Tag: roller-builder:samples-sdk-updater
Cq-Cl-Tag: roller-bid:8828402966688625985
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I76739c20322c11d41bb6f4eed76782d350b65cd0
Reviewed-on: https://fuchsia-review.googlesource.com/c/samples/+/615525
Commit-Queue: third_party Roller <third-party-roller@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/sdk.version b/sdk.version
index cfcbd47..e9f747e 100644
--- a/sdk.version
+++ b/sdk.version
@@ -1 +1 @@
-7.20211207.3.1
+7.20211208.2.1