build(deps): bump log from 0.4.14 to 0.4.15 (#1555)

Bumps [log](https://github.com/rust-lang/log) from 0.4.14 to 0.4.15.
- [Release notes](https://github.com/rust-lang/log/releases)
- [Changelog](https://github.com/rust-lang/log/blob/master/CHANGELOG.md)
- [Commits](rust-lang/log@0.4.14...0.4.15)

---
updated-dependencies:
- dependency-name: log
  dependency-type: indirect
  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 a0037a3)
Signed-off-by: Oliver Gould <ver@buoyant.io>

Cargo.lock

@@ -1514,9 +1514,9 @@ dependencies = [
 
 [[package]]
 name = "log"
-version = "0.4.14"
+version = "0.4.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "51b9bbe6c47d51fc3e1a9b945965946b4c44142ab8792c50835a980d362c2710"
+checksum = "1c4dcd960cc540667f619483fc99102f88d6118b87730e24e8fbe8054b7445e4"
 dependencies = [
  "cfg-if",
 ]