[tests] fix binary_data_get unit test

[Yakiv-Huryk]

Fix incorrect sizeof() value in the Table.binary_data_get unit test

[prsunny]

/azp run

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[Yakiv-Huryk]

/azp run

[azure-pipelines]

Commenter does not have sufficient privileges for PR 841 in repo sonic-net/sonic-swss-common

[Yakiv-Huryk]

/azpw run

[mssonicbld]

/AzurePipelines run

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[liat-grozovik]

@prsunny can you please merge?

[prsunny]

@qiluo-msft to merge

[Junchao-Mellanox]

Hi @qiluo-msft ,

This is a blocking issue for bookworm. I see following error in my local build:

11:34:33  /usr/include/c++/12/bits/basic_string.h:620:21: error: array subscript 8 is outside array bounds of 'const char [6]' [-Werror=array-bounds]
11:34:33    620 |         _M_construct(__s, __s + __n, std::forward_iterator_tag());
11:34:33        |         ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11:34:33  In constructor 'std::__cxx11::basic_string<_CharT, _Traits, _Alloc>::basic_string(const _CharT*, size_type, const _Alloc&) [with _CharT = char; _Traits = std::char_traits<char>; _Alloc = std::allocator<char>]',
11:34:33      inlined from 'virtual void Table_binary_data_get_Test::TestBody()' at tests/redis_ut.cpp:857:53:
11:34:33  /usr/include/c++/12/bits/basic_string.h:620:21: error: array subscript 8 is outside array bounds of 'const char [6]' [-Werror=array-bounds]
11:34:33    620 |         _M_construct(__s, __s + __n, std::forward_iterator_tag());
11:34:33        |         ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Could you please help merge it if no more comments?