[clang] [clang][analyzer] Move checker alpha.security.cert.pos.34c into security.PutenvWithAuto (PR #92424)

[Donát Nagy via cfe-commits]

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@@ -1032,11 +1037,6 @@ let ParentPackage = ENV in {
 
 let ParentPackage = POSAlpha in {
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NagyDonat wrote:

Please delete the packages that will no longer contain any checkers after this change. (As it's a bad naming scheme, they shouldn't be repopulated later.)

https://github.com/llvm/llvm-project/pull/92424