refactor: use core.getBooleanInput()

dist/index.js

@@ -478,8 +478,7 @@ function run() {
                 }
             }
             if (versions.length) {
-                const includePrerelease = (core.getInput('include-prerelease') || 'false').toLowerCase() ===
+                const includePrerelease = core.getBooleanInput('include-prerelease');
-                    'true';
                 let dotnetInstaller;
                 for (const version of new Set(versions)) {
                     dotnetInstaller = new installer.DotnetCoreInstaller(version, includePrerelease);

src/setup-dotnet.ts

@@ -38,9 +38,9 @@ export async function run() {
     }
 
     if (versions.length) {
-      const includePrerelease: boolean =
+      const includePrerelease: boolean = core.getBooleanInput(
-        (core.getInput('include-prerelease') || 'false').toLowerCase() ===
+        'include-prerelease'
-        'true';
+      );
       let dotnetInstaller!: installer.DotnetCoreInstaller;
       for (const version of new Set<string>(versions)) {
         dotnetInstaller = new installer.DotnetCoreInstaller(