Bump dev.zio:zio_3 from 2.1.18 to 2.1.20 (#338)

Bumps [dev.zio:zio_3](https://github.com/zio/zio) from 2.1.18 to 2.1.20.
- [Release notes](https://github.com/zio/zio/releases)
- [Commits](zio/zio@v2.1.18...v2.1.20)

---
updated-dependencies:
- dependency-name: dev.zio:zio_3
  dependency-version: 2.1.20
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

build.gradle

@@ -19,7 +19,7 @@ def VERSIONS = [
     SCALA3        : "3.7.0",
     MAGNUM        : "1.3.1",
     STTP          : "3.11.0",
-    ZIO           : "2.1.18",
+    ZIO           : "2.1.20",
     REST_ASSURED  : "5.5.5",
 ]