c++: change desired language to C++23

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I7c69cbf4da5409c7fd105b946d10536e69c6c618
diff --git a/cpp-style-and-conventions.md b/cpp-style-and-conventions.md
index b1ad533..341c083 100644
--- a/cpp-style-and-conventions.md
+++ b/cpp-style-and-conventions.md
@@ -34,8 +34,8 @@
 ### Code should be written with modern practices
 
 We strive to keep our code conforming to and utilizing of the latest in C++
-standards. Today, that means all C++ code should be compiled using C++20
-compiler settings. As the C++23 standard is finalized and compilers support it,
+standards. Today, that means all C++ code should be compiled using C++23
+compiler settings. As the C++26 standard is finalized and compilers support it,
 we will move to it as well.
 
 We also strive to keep the codebase up-to-date with the latest recommended