Revert "chore(deps): Bump httpclient-version from 5.5.2 to 5.6.1"

[apupier]

Reverts #22688

unfotunately, it is causing troubles with restassured and some of our tests, see https://issues.apache.org/jira/browse/CAMEL-23366
The work to upgrade rest assured to httpclient 5.6 is consequent as it is still based on version 4

[github-actions]

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[apupier]

reported https://issues.apache.org/jira/browse/CAMEL-23375 to upgrade later

[github-actions]

🧪 CI tested the following changed modules:

• components/camel-http
• parent

ℹ️ Dependent modules were not tested because the total number of affected modules exceeded the threshold (50). Use the test-dependents label to force testing all dependents.

✅ POM dependency changes: targeted tests included

Changed properties: httpclient-version

Modules affected by dependency changes (20)

• :camel-as2-api
• :camel-box
• :camel-cm-sms
• :camel-cxf-rest
• :camel-cxf-soap
• :camel-cxf-spring-rest
• :camel-cxf-spring-soap
• :camel-geocoder
• :camel-graphql
• :camel-http
• :camel-itest
• :camel-jetty
• :camel-keycloak
• :camel-launcher
• :camel-oaipmh
• :camel-oauth
• :camel-splunk-hec
• :camel-weather
• :camel-wordpress
• :camel-workday

⚠️ Some tests are disabled on GitHub Actions (@DisabledIfSystemProperty(named = "ci.env.name")) and require manual verification:

• components/camel-http: 1 test(s) disabled on GitHub Actions

Build reactor — dependencies compiled but only changed modules were tested (21 modules)

• Camel :: AS2 :: API
• Camel :: Box :: Component
• Camel :: CM SMS
• Camel :: CXF :: REST
• Camel :: CXF :: REST :: Spring
• Camel :: CXF :: SOAP
• Camel :: CXF :: SOAP :: Spring
• Camel :: Geocoder
• Camel :: GraphQL
• Camel :: HTTP
• Camel :: Integration Tests
• Camel :: Jetty
• Camel :: Keycloak
• Camel :: Launcher
• Camel :: OAIPMH
• Camel :: OAuth
• Camel :: Parent
• Camel :: Splunk HEC
• Camel :: Weather
• Camel :: Wordpress
• Camel :: Workday

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