Bump third_party/nanopb/repo from `d9ecc77` to `9c11463` (#29048)

Bumps [third_party/nanopb/repo](https://github.com/nanopb/nanopb) from `d9ecc77` to `9c11463`.
- [Commits](https://github.com/nanopb/nanopb/compare/d9ecc77395f09cd8cafd8b63cb82a27e6b02c04a...9c11463770beab0c6f244999e66676f9bca866fd)

---
updated-dependencies:
- dependency-name: third_party/nanopb/repo
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/third_party/nanopb/repo b/third_party/nanopb/repo
index d9ecc77..9c11463 160000
--- a/third_party/nanopb/repo
+++ b/third_party/nanopb/repo
@@ -1 +1 @@
-Subproject commit d9ecc77395f09cd8cafd8b63cb82a27e6b02c04a
+Subproject commit 9c11463770beab0c6f244999e66676f9bca866fd