fix: update kit Xcode projects to use main branch (#726)

fix: update kit Xcode projects to use main branch instead of workstation

Kit project.pbxproj files for Firebase, FirebaseGA4, and UrbanAirship
still referenced the workstation/9.0-Release branch. Updated all 6
project files to point to main.

Author: thomson-t

Kits/google-analytics-firebase-ga4/firebase-ga4-11/mParticle-FirebaseGA4.xcodeproj/project.pbxproj

@@ -526,7 +526,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};

Kits/google-analytics-firebase-ga4/firebase-ga4-12/mParticle-FirebaseGA4.xcodeproj/project.pbxproj

@@ -526,7 +526,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};

Kits/google-analytics-firebase/firebase-11/mParticle-Firebase.xcodeproj/project.pbxproj

@@ -370,7 +370,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};

Kits/google-analytics-firebase/firebase-12/mParticle-Firebase.xcodeproj/project.pbxproj

@@ -295,7 +295,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};

Kits/urbanairship/urbanairship-19/mParticle-UrbanAirship.xcodeproj/project.pbxproj

@@ -307,7 +307,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};

Kits/urbanairship/urbanairship-20/mParticle-UrbanAirship.xcodeproj/project.pbxproj

@@ -307,7 +307,7 @@
 			isa = XCRemoteSwiftPackageReference;
 			repositoryURL = "https://github.com/mParticle/mparticle-apple-sdk";
 			requirement = {
-				branch = "workstation/9.0-Release";
+				branch = main;
 				kind = branch;
 			};
 		};