feat: use c++20

Author: NathanWalker

v8ios.xcodeproj/project.pbxproj

@@ -2433,7 +2433,7 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
@@ -2496,7 +2496,7 @@
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_NONNULL = YES;
 				CLANG_ANALYZER_NUMBER_OBJECT_CONVERSION = YES_AGGRESSIVE;
-				CLANG_CXX_LANGUAGE_STANDARD = "gnu++14";
+				CLANG_CXX_LANGUAGE_STANDARD = "gnu++20";
 				CLANG_CXX_LIBRARY = "libc++";
 				CLANG_ENABLE_MODULES = YES;
 				CLANG_ENABLE_OBJC_ARC = YES;
@@ -2676,7 +2676,7 @@
 		C2DDEB2A229EA89200345BFE /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "compiler-default";
 				CLANG_ENABLE_MODULES = NO;
 				CODE_SIGN_IDENTITY = "Apple Development";
@@ -2731,7 +2731,7 @@
 		C2DDEB2B229EA89200345BFE /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_CXX_LIBRARY = "compiler-default";
 				CLANG_ENABLE_MODULES = NO;
 				CODE_SIGN_IDENTITY = "Apple Development";
@@ -2788,7 +2788,7 @@
 			buildSettings = {
 				ALLOW_TARGET_PLATFORM_SPECIALIZATION = NO;
 				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_ENABLE_MODULES = NO;
 				CLANG_ENABLE_OBJC_ARC = NO;
 				CURRENT_PROJECT_VERSION = 1;
@@ -2883,7 +2883,7 @@
 			buildSettings = {
 				ALLOW_TARGET_PLATFORM_SPECIALIZATION = NO;
 				BUILD_LIBRARY_FOR_DISTRIBUTION = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++20";
 				CLANG_ENABLE_MODULES = NO;
 				CLANG_ENABLE_OBJC_ARC = NO;
 				CURRENT_PROJECT_VERSION = 1;