Fix buildx condition

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

dist/index.js

@@ -1213,7 +1213,7 @@ function mustBuildx(inputs) {
     return __awaiter(this, void 0, void 0, function* () {
         return (inputs.builder.length > 0 ||
             inputs.platforms.length > 0 ||
-            inputs.push ||
+            inputs.load ||
             inputs.outputs.length > 0 ||
             inputs.cacheFrom.length > 0 ||
             inputs.cacheTo.length > 0);

src/context-helper.ts

@@ -42,7 +42,7 @@ export async function mustBuildx(inputs: Inputs): Promise<boolean> {
   return (
     inputs.builder.length > 0 ||
     inputs.platforms.length > 0 ||
-    inputs.push ||
+    inputs.load ||
     inputs.outputs.length > 0 ||
     inputs.cacheFrom.length > 0 ||
     inputs.cacheTo.length > 0