[roll] Roll third_party/fuchsia-infra-bazel-rules [roll] Roll third_party/platforms Update release instructions (#118)

Update README.md
Original-Revision: d4faccd83f8734fe83c188057b5bba0a70fd19b0

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia-infra-bazel-rules/+/1286631
Original-Revision: 6a7f34b97ee7ce344deb85da73c26c5896528fef

Roller-URL: https://cr-buildbucket.appspot.com/build/8713685616573639841
CQ-Do-Not-Cancel-Tryjobs: true
Change-Id: I24e8762fc1cb52d5864f1687b269735ed121e1c2
Reviewed-on: https://fuchsia-review.googlesource.com/c/sdk-samples/getting-started/+/1286633
Commit-Queue: GI Roller <global-integration-roller@fuchsia-infra.iam.gserviceaccount.com>
diff --git a/third_party/fuchsia-infra-bazel-rules b/third_party/fuchsia-infra-bazel-rules
index 3a4dbc6..6a7f34b 160000
--- a/third_party/fuchsia-infra-bazel-rules
+++ b/third_party/fuchsia-infra-bazel-rules
@@ -1 +1 @@
-Subproject commit 3a4dbc6568b400c736b70f4d6b2444d1939a8074
+Subproject commit 6a7f34b97ee7ce344deb85da73c26c5896528fef