Return mergedConfig instead of loading it again

lib/entry-points.js

@@ -148722,13 +148722,17 @@ async function determineUserConfig(logger, env, features, tempDir, inputs) {
         tempDir,
         validateConfig
       );
-      fs9.writeFileSync(
-        computedConfigPath,
-        dump(mergeUserConfigs(logger, fromConfigInput, fromConfigFile))
+      const mergedConfig = mergeUserConfigs(
+        logger,
+        fromConfigInput,
+        fromConfigFile
       );
+      fs9.writeFileSync(computedConfigPath, dump(mergedConfig));
       logger.debug(
         `Using merged configurations from 'config' input with configuration from '${inputs.configFile}': ${computedConfigPath}`
       );
+      inputs.configFile = computedConfigPath;
+      return mergedConfig;
     } else {
       if (inputs.configFile) {
         logger.warning(
@@ -148736,9 +148740,9 @@ async function determineUserConfig(logger, env, features, tempDir, inputs) {
         );
       }
       fs9.writeFileSync(computedConfigPath, inputs.configInput);
-      logger.debug(`Using config from action input: ${computedConfigPath}`);
+      inputs.configFile = computedConfigPath;
+      logger.debug(`Using config from action input: ${inputs.configFile}`);
     }
-    inputs.configFile = computedConfigPath;
   }
   if (!inputs.configFile) {
     logger.debug("No configuration file was provided");