Initialize cache variable closer to usage

src/main.ts

@@ -20,7 +20,6 @@ export async function run() {
     const version = resolveVersionInput();
 
     let arch = core.getInput('architecture');
-    const cache = core.getInput('cache');
 
     // if architecture supplied but node-version is not
     // if we don't throw a warning, the already installed x64 node will be used which is not probably what user meant.
@@ -60,6 +59,7 @@ export async function run() {
       auth.configAuthentication(registryUrl, alwaysAuth);
     }
 
+    const cache = core.getInput('cache');
     if (cache && isCacheFeatureAvailable()) {
       core.saveState(State.CachePackageManager, cache);
       const cacheDependencyPath = core.getInput('cache-dependency-path');