rs: bump rust toolchain to 1.95 (#38)

## Summary
- Bumps the registered rust toolchain to 1.95.0 in `MODULE.bazel` and
the workspace `rust-version` in `Cargo.toml`.
- Drops the "matches ruff 0.15.10 MSRV" comments since 1.95 is now
intentionally above ruff's declared floor.

## Test plan
- [ ] CI green (build + tests under the new toolchain)
- [ ] BCR presubmit green

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: longlho

Cargo.toml

@@ -6,10 +6,7 @@ members = [
 
 [workspace.package]
 edition = "2024"
-# Floor matches ruff 0.15.10's own rust-version — we don't use anything beyond
-# what ruff requires, so the right floor is theirs. Edition 2024 itself only
-# needs 1.85+; ruff is the binding constraint.
-rust-version = "1.92"
+rust-version = "1.95"
 license = "Apache-2.0"
 repository = "https://github.com/hermeticbuild/gazelle_py"
 

MODULE.bazel

@@ -33,16 +33,14 @@ rules_rust = use_extension("@rules_rs//rs:rules_rust.bzl", "rules_rust")
 use_repo(rules_rust, "rules_rust")
 
 # Rust toolchain — propagates to consumers because their gazelle_binary
-# links our staticlib via cgo and needs to build the rust crate. Pinned to
-# ruff 0.15.10's declared MSRV; we don't use anything beyond what ruff
-# requires, so the right floor is theirs.
+# links our staticlib via cgo and needs to build the rust crate.
 toolchains = use_extension(
     "@rules_rs//rs/toolchains:module_extension.bzl",
     "toolchains",
 )
 toolchains.toolchain(
     edition = "2024",
-    version = "1.92.0",
+    version = "1.95.0",
 )
 use_repo(toolchains, "default_rust_toolchains")