fix: link Sparkle framework to target for auto-updates

- Add XCSwiftPackageProductDependency for Sparkle
- Link Sparkle to MyMacCleaner target's packageProductDependencies
- Update appcast.xml with new signature for Sparkle-enabled build

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: Prot10

MyMacCleaner.xcodeproj/project.pbxproj

@@ -125,6 +125,7 @@
 			);
 			name = MyMacCleaner;
 			packageProductDependencies = (
+				65E790862F0C23E200CA264D /* Sparkle */,
 			);
 			productName = MyMacCleaner;
 			productReference = 650DE29B2EE843C000C84519 /* MyMacCleaner.app */;
@@ -610,6 +611,14 @@
 			};
 		};
 /* End XCRemoteSwiftPackageReference section */
+
+/* Begin XCSwiftPackageProductDependency section */
+		65E790862F0C23E200CA264D /* Sparkle */ = {
+			isa = XCSwiftPackageProductDependency;
+			package = 65E790852F0C23E200CA264C /* XCRemoteSwiftPackageReference "Sparkle" */;
+			productName = Sparkle;
+		};
+/* End XCSwiftPackageProductDependency section */
 	};
 	rootObject = 650DE2932EE843C000C84519 /* Project object */;
 }

appcast.xml

@@ -30,7 +30,7 @@
                     <li>Added version indicator badge in the Home screen header</li>
                 </ul>
             ]]></description>
-            <enclosure url="https://github.com/Prot10/MyMacCleaner/releases/download/v1.1.1/MyMacCleaner-v1.1.1.zip" sparkle:edSignature="4Q1J1+cyrMoSQP8ZOy2FY911mZ4stZ6iTAtuwHTccUSnXrrPd3CyEPJwsSOg1gqCvycq0VRrobzgJfEEPF5bAg==" length="4853933" type="application/octet-stream"/>
+            <enclosure url="https://github.com/Prot10/MyMacCleaner/releases/download/v1.1.1/MyMacCleaner-v1.1.1.zip" sparkle:edSignature="f+54v+CCmFW2NSilyoPtbx0PknVoyQhgPSozsH5wqHAEWFGlGzEPtLPkO2poW6nzdn4iiZnSn4ev+nxw4/PeAw==" length="5788805" type="application/octet-stream"/>
         </item>
 
         <item>