chore: bump version to 2.2.20

Ships:
- `fbuild bloat` / `fbuild symbols` rows now carry a `referenced_by`
  array parsed from GNU `ld`'s `Cross Reference Table` block; the
  markdown report gains a "Referenced by" column (#459 / #460).
- `fbuild bloat graph` subcommand for graphviz `.dot` back-reference
  graphs (#463 / #468).
- `setup.py` locates the cargo binary under
  `target/<host-triple>/release/` in addition to the flat
  `target/release/`, so `pip install .` / `uv pip install -e .`
  works on the rustup-managed toolchain layout (Windows in
  particular, #461).
- Claude Code Stop / PostToolUse hooks are now PEP 723 scripts
  (#464 / #466), scope clippy + test to the changed crates only
  instead of `--workspace` on every Stop (#465 / #467), and have a
  120s timeout with the workspace-wide gate moved to an opt-in
  `ci/git-hooks/pre-push` (#462 / #469).

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

Author: zackees

Cargo.lock

@@ -26,7 +26,7 @@ exclude = ["dylints/ban_raw_subprocess"]
 libraries = [{ path = "dylints/*" }]
 
 [workspace.package]
-version = "2.2.19"
+version = "2.2.20"
 edition = "2021"
 rust-version = "1.94.1"
 license = "MIT OR Apache-2.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [project]
 name = "fbuild"
-version = "2.2.19"
+version = "2.2.20"
 description = "PlatformIO-compatible embedded build tool (Rust implementation)"
 readme = "README.md"
 requires-python = ">=3.10"