build(deps): bump bstr from 0.2.14 to 0.2.15

Bumps [bstr](https://github.com/BurntSushi/bstr) from 0.2.14 to 0.2.15.
- [Release notes](https://github.com/BurntSushi/bstr/releases)
- [Commits](https://github.com/BurntSushi/bstr/compare/0.2.14...0.2.15)

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

Cargo.lock

@@ -137,9 +137,9 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "473fc6b38233f9af7baa94fb5852dca389e3d95b8e21c8e3719301462c5d9faf"
+checksum = "a40b47ad93e1a5404e6c18dec46b628214fee441c70f4ab5d6942142cc268a3d"
 dependencies = [
  "memchr",
 ]