chore(deps): bump ktor-client-apache from 1.5.4 to 1.6.0 in /backend

Bumps [ktor-client-apache](https://github.com/ktorio/ktor) from 1.5.4 to 1.6.0.
- [Release notes](https://github.com/ktorio/ktor/releases)
- [Changelog](https://github.com/ktorio/ktor/blob/main/CHANGELOG.md)
- [Commits](ktorio/ktor@1.5.4...1.6.0)

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

Author: dependabot[bot]

backend/build.gradle

@@ -108,7 +108,7 @@ subprojects {
         implementation "io.ktor:ktor-client-core:1.6.0"
         //Using Apache Engine Ktor engine, because it is at this time the only one that supports following redirects
         // https://ktor.io/docs/http-client-engines.html#jvm
-        implementation "io.ktor:ktor-client-apache:1.5.4"
+        implementation "io.ktor:ktor-client-apache:1.6.0"
         implementation "io.ktor:ktor-client-jackson:1.6.0"
 
         implementation('com.github.chimbori:crux:3.0.1')