fix(skills): fix robot integration test YAML creation for skill: wrapper key test

robot/skill_schema.robot

@@ -53,7 +53,13 @@ Validate Spec-Compliant Skill YAML With skill: Wrapper Key
     [Tags]    tdd_issue    tdd_issue_1472
     [Documentation]    Parse a spec-compliant YAML with cleveragents: header and skill: wrapper key
     ${wrapped_yaml}=    Set Variable    ${TEMPDIR}${/}wrapped_skill.yaml
-    ${yaml_content}=    Set Variable    cleveragents:\n  version: "1.0"\nskill:\n  name: local/wrapped-skill\n  description: "A wrapped skill"\n
+    ${yaml_content}=    Catenate    SEPARATOR=\n
+    ...    cleveragents:
+    ...    ${SPACE}${SPACE}version: "1.0"
+    ...    skill:
+    ...    ${SPACE}${SPACE}name: local/wrapped-skill
+    ...    ${SPACE}${SPACE}description: "A wrapped skill"
+    ...
     Create File    ${wrapped_yaml}    ${yaml_content}
     ${result}=    Run Process    ${PYTHON}    ${HELPER}    validate    ${wrapped_yaml}    cwd=${WORKSPACE}
     Log    ${result.stdout}