build(deps): bump libc from 0.2.114 to 0.2.115 (#1449)

Bumps [libc](https://github.com/rust-lang/libc) from 0.2.114 to 0.2.115.
- [Release notes](https://github.com/rust-lang/libc/releases)
- [Commits](rust-lang/libc@0.2.114...0.2.115)

---
updated-dependencies:
- dependency-name: libc
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
(cherry picked from commit 6ea3c62)
Signed-off-by: Oliver Gould <ver@buoyant.io>

Cargo.lock

@@ -598,9 +598,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
 
 [[package]]
 name = "libc"
-version = "0.2.114"
+version = "0.2.115"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b0005d08a8f7b65fb8073cb697aa0b12b631ed251ce73d862ce50eeb52ce3b50"
+checksum = "0a8d982fa7a96a000f6ec4cfe966de9703eccde29750df2bb8949da91b0e818d"
 
 [[package]]
 name = "libfuzzer-sys"