pseudo: Fix envp bug and add posix_spawn wrapper

Fix pseudo with python 3.13 by adding a wrapper for posix_spawn and
fixing a NULL pointer dereference in envp handling it uncovered. This
fixes issues on Fedora 41.

(From OE-Core rev: 782fc8c12deaf713a60c62c34914b585ff150ddf)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit d80e20d70d170397f9827c5a5fc75ad1f2e8cd94)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

meta/recipes-devtools/pseudo/pseudo_git.bb

@@ -14,7 +14,7 @@ SRC_URI:append:class-nativesdk = " \
     file://older-glibc-symbols.patch"
 SRC_URI[prebuilt.sha256sum] = "ed9f456856e9d86359f169f46a70ad7be4190d6040282b84c8d97b99072485aa"
 
-SRCREV = "374089f2ed83da4d0d4e58df067142ff99c7eb12"
+SRCREV = "28dcefb809ce95db997811b5662f0b893b9923e0"
 S = "${WORKDIR}/git"
 PV = "1.9.0+git"