Bump bl from 6.0.0 to 6.0.12

Bumps [bl](https://github.com/rvagg/bl) from 6.0.0 to 6.0.12.
- [Release notes](https://github.com/rvagg/bl/releases)
- [Changelog](https://github.com/rvagg/bl/blob/master/CHANGELOG.md)
- [Commits](rvagg/bl@v6.0.0...v6.0.12)

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

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

package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@google-cloud/logging-bunyan": "^5.0.1",
     "@google-cloud/secret-manager": "^5.0.1",
-    "bl": "^6.0.0",
+    "bl": "^6.0.12",
     "bunyan": "^1.8.15",
     "express": "^4.18.2",
     "flags": "^0.1.3",