Fix C4702 warning and extend MSVC CI job (#4749)

* :alembic: try matrix for latest

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* :recycle: refactor from https://github.com/nlohmann/json/issues/4745#issuecomment-2810128420

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* :construction_worker: simplify CI

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* :construction_worker: simplify CI

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* :rotating_light: fix cpplint warning

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* :construction_worker: simplify CI

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

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Signed-off-by: Niels Lohmann <mail@nlohmann.me>