dpkg: upgrade 1.22.5 -> 1.22.6

Changelog:
============
-po: Regenerate .pot files and merge .po files with them
-Dpkg::Vendor::Debian: Unconditionally set qa bug-implicit-func
-build: Fix typo in CI config
-build: Add gen-release script
-test: Skip OpenPGP tests if the backend does not have a verify command
-test: Refactor certfile and keyfile filenames for OpenPGP test
-test: Refactor OpenPGP backend and commands list
-build: Test with minimal library dependencies in CI
-dpkg-deb: Fix up compressor parameters for default legacy format
-man: Document dpkg versions supporting SOURCE_DATE_EPOCH for various tools
-debian: Fix typo in man page reference in changelog
-po: Fix typos in Swedish man pages translations
-po: Update Dutch man pages translations
-po: Update Portugese man pages translations
-Dpkg::Vendor::Debian: Make it possible to disable qa=-bug-implicit-func
-libdpkg: Use a macro to define the zstd default compression level
-libdpkg: Use array access instead of pointer arithmetic for meminfo parser
-po: Update German man pages translation

(From OE-Core rev: b9b4ad48812add8b59d3b17e5c3bd9fd3f8744c7)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/dpkg/dpkg_1.22.6.bb

@@ -17,6 +17,6 @@ SRC_URI = "git://salsa.debian.org/dpkg-team/dpkg.git;protocol=https;branch=main
 
 SRC_URI:append:class-native = " file://0001-build.c-ignore-return-of-1-from-tar-cf.patch"
 
-SRCREV = "1c92a4a8bfbeea30ceb0109b096c4ec845e3c6ce"
+SRCREV = "b2f9600ead232a2dd3c27f8b52807a9ca5854d17"
 
 S = "${WORKDIR}/git"