Bump benchmark-action/github-action-benchmark from 1.20.4 to 1.20.5

Bumps [benchmark-action/github-action-benchmark](https://github.com/benchmark-action/github-action-benchmark) from 1.20.4 to 1.20.5.
- [Release notes](https://github.com/benchmark-action/github-action-benchmark/releases)
- [Changelog](https://github.com/benchmark-action/github-action-benchmark/blob/master/CHANGELOG.md)
- [Commits](benchmark-action/github-action-benchmark@d48d326...4e0b38b)

---
updated-dependencies:
- dependency-name: benchmark-action/github-action-benchmark
  dependency-version: 1.20.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/benchmark.yml

@@ -69,7 +69,7 @@ jobs:
         run: |
           cat benchmarks/*
       - name: Push benchmark result
-        uses: benchmark-action/github-action-benchmark@d48d326b4ca9ba73ca0cd0d59f108f9e02a381c7 # v1.20.4
+        uses: benchmark-action/github-action-benchmark@4e0b38bc48375986542b13c0d8976b7b80c60c00 # v1.20.5
         with:
           name: OpenTelemetry-cpp ${{ matrix.components }} Benchmark
           tool: 'googlecpp'