Turn off deprecated bison warnings under MSVC
These are disabled by the configure code, so this is just fixing an
inconsistency in the MSVC code.
Backpatch to all live branches.
Branch
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REL_10_STABLE
Details
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https://git.postgresql.org/pg/commitdiff/3163349fd7fe0115b021bfa1fbe4990143957814
Modified Files
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src/tools/msvc/pgbison.pl | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)