fix: update PostHog to 3.62.0 to fix SwiftDriver compilation error

- Pin PostHog to 3.62.0 (vendored PLCrashReporter, drops external
  plcrashreporter dependency that fails with Xcode 26/Swift 6)
- Update project.yml and pbxproj minimumVersion
- Delete Package.resolved to force clean SPM resolution
- Add -resolvePackageDependencies step in CI workflow
- Add -skipPackagePluginValidation to build command
- Fix docs/ci-cd-setup.md manual build command

tabatago-swift/TabataGo.xcodeproj/project.pbxproj

@@ -1331,7 +1331,7 @@
 			repositoryURL = "https://github.com/PostHog/posthog-ios";
 			requirement = {
 				kind = upToNextMajorVersion;
-				minimumVersion = 3.0.0;
+				minimumVersion = 3.62.0;
 			};
 		};
 		B502009078E4064243CF221F /* XCRemoteSwiftPackageReference "supabase-swift" */ = {