build(deps): bump third_party/python-sdf-timing

Bumps [third_party/python-sdf-timing](https://github.com/SymbiFlow/python-sdf-timing) from `119eee0` to `ea99ca8`.
- [Release notes](https://github.com/SymbiFlow/python-sdf-timing/releases)
- [Commits](https://github.com/SymbiFlow/python-sdf-timing/compare/119eee06c5a8700da594c5e066259a96858ececa...ea99ca85e086d1d1ffa70353328faedb6ba6bcc9)

---
updated-dependencies:
- dependency-name: third_party/python-sdf-timing
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

third_party/python-sdf-timing

diff --git a/third_party/python-sdf-timing b/third_party/python-sdf-timing
index 119eee0..ea99ca8 160000
--- a/third_party/python-sdf-timing
+++ b/third_party/python-sdf-timing
@@ -1 +1 @@
-Subproject commit 119eee06c5a8700da594c5e066259a96858ececa
+Subproject commit ea99ca85e086d1d1ffa70353328faedb6ba6bcc9