Bump bollard from 0.19.4 to 0.20.2 (#570)

Bumps [bollard](https://github.com/fussybeaver/bollard) from 0.19.4 to 0.20.2.
- [Release notes](https://github.com/fussybeaver/bollard/releases)
- [Changelog](https://github.com/fussybeaver/bollard/blob/master/RELEASE.md)
- [Commits](fussybeaver/bollard@v0.19.4...v0.20.2)

---
updated-dependencies:
- dependency-name: bollard
  dependency-version: 0.20.2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -109,7 +109,7 @@ r2d2_adbc = { version = "0.2.0", optional = true }
 
 [dev-dependencies]
 anyhow = "1.0"
-bollard = "0.19"
+bollard = "0.20"
 geozero = { version = "0.14.0", features = ["with-wkb"] }
 insta = { version = "1.46.0", features = ["filters"] }
 prost = { version = "=0.14.3" }