Fix MISRA C++ 2023 rule 5.10.1 "User-defined identifiers shall have an appropriate form"

[mohammedRafeeque]

Zserio version and language
Zserio: latest from master
Commit date: 6 days ago (6/4/2024 7:12:28 PM)
Commit hash: b8cc6c0

Describe the bug
1 Misra warning getting reported

1.  constexpr ::zserio::StringView operator"" _sv(const char* str, std::size_t len) noexcept
   

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SNo	Rule	Severity	Message	Filename	Linenumber
1396	MISRACPP2023-5_10_1-e	2	Do not precede the user-defined literal suffix with a space: '_sv'	/zserio_runtime/include/roadgraph_reliable/zserio_runtime/zserio/StringView.h	1002

Please check possibility of fixing the same.

Steps to reproduce the behavior:
SCA run using MISRA 2023 configuration.

Expected behavior
No SCA warnings for MISRA 2023 ruleset

Additional context
N.A

@Roland-Homeier @mikir FYI.