[vte] build: Require a C++20 compiler

[Christian Persch <chpe src gnome org>]

commit eec33cce0b9359fddda35703e22bffd1f8f28852
Author: Christian Persch <chpe src gnome org>
Date:   Wed Feb 24 20:22:10 2021 +0100

    build: Require a C++20 compiler

 meson.build | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)
---
diff --git a/meson.build b/meson.build
index 76d29041..8d2b8b3e 100644
--- a/meson.build
+++ b/meson.build
@@ -30,9 +30,9 @@ project(
 # Compiler requirements
 
 c_req_std                 = 'gnu11'
-cxx_req_std               = 'gnu++17'
-gxx_req_version           = '7.0'
-clangxx_req_version       = '8.0'
+cxx_req_std               = 'gnu++20'
+gxx_req_version           = '10.0'
+clangxx_req_version       = '11.0'
 
 # Version requirements