Revert "start-proxy: Skip proxy setup if no credentials are available"

Author: marcogario

lib/start-proxy-action.js

@@ -99,12 +99,6 @@ async function runWrapper() {
     actionsUtil.getOptionalInput("registries_credentials"),
     actionsUtil.getOptionalInput("language"),
   );
-
-  if (credentials.length === 0) {
-    logger.info("No credentials found, skipping proxy setup.");
-    return;
-  }
-
   logger.info(
     `Credentials loaded for the following registries:\n ${credentials
       .map((c) => credentialToStr(c))