Bump stackprof from 0.2.15 to 0.2.16 (#15046)

Bumps [stackprof](https://github.com/tmm1/stackprof) from 0.2.15 to 0.2.16.
- [Release notes](https://github.com/tmm1/stackprof/releases)
- [Changelog](https://github.com/tmm1/stackprof/blob/master/CHANGELOG.md)
- [Commits](https://github.com/tmm1/stackprof/compare/v0.2.15...v0.2.16)

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile.lock

@@ -596,7 +596,7 @@ GEM
     sshkit (1.21.0)
       net-scp (>= 1.1.2)
       net-ssh (>= 2.8.0)
-    stackprof (0.2.15)
+    stackprof (0.2.16)
     statsd-ruby (1.4.0)
     stoplight (2.2.1)
     streamio-ffmpeg (3.0.2)