bump-stage0: pick highest common `toml` version, add a workaround

- We pick the higest common `toml` version used in the r-l/r workspace
  to avoid introducing Yet Another `toml` `0.x` version, which happens
  to be `0.8.23` as of the time of writing.
- We introduce a byte-buffer-to-string workaround for the `toml 0.8.*`
  series that do not have the `toml 0.9.*` series's `toml::from_slice`
  API yet. Not efficient, but this is not perf-critical so it's fine.

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.lock b/Cargo.lock
index c4c96f1569b..aa2bdb38536 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -336,7 +336,7 @@ dependencies = [
  "curl",
  "indexmap",
  "serde",
- "toml 0.7.8",
+ "toml 0.8.23",
 ]
 
 [[package]]