Bump cpp-linter from 1.6.2 to 1.6.3 · cpp-linter/cpp-linter-action@a5d76cc

static_assert failed "Error in C++ Standard Library usage."

use a trailing return type for this function

use a trailing return type for this function

statement should be inside braces

do not call c-style vararg functions

use a trailing return type for this function

use nullptr

File src/demo.cpp does not conform to Custom style guidelines. (lines 2)

File src/demo.hpp does not conform to Custom style guidelines. (lines 1, 7, 10, 14, 37, 39)

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