conditional-installer: Fixed WARNING for module input

This change fixes a warning about using a deprecated build step for input.

  WARNING: Deprecated 'input' build step behavior - it should be: 'input ./input.json def.json'

cfbs.json

@@ -89,7 +89,7 @@
       "subdirectory": "security/conditional-installer",
       "steps": [
         "copy main.cf services/cfbs/modules/conditional-installer/main.cf",
-        "input conditional-installer/input.json def.json",
+        "input ./input.json def.json",
         "bundles conditional_installer:main",
         "policy_files services/cfbs/modules/conditional-installer/main.cf"
       ],