bind: upgrade 9.20.5 -> 9.20.6

Changelog:
===========
New Features
--------------
- Adds support for EDE code 1 and 2.
- Add a rndc command to toggle jemalloc profiling.
- Add support for multiple extended DNS errors.
- Print the expiration time of the stale records.

Feature Changes
---------------
- Refactor reference counting in both QPDB and RBTDB.
- Shutdown the fetch context after canceling the last fetch.

Bug Fixes
----------
- Fix possible truncation in dns_keymgr_status()
- Recently expired records could be returned with timestamp in future.
- Yaml string not terminated in negative response in delv.
- Fix a bug in dnssec-signzone related to keys being offline.
- Apply the memory limit only to ADB database items.
- Avoid unnecessary locking in the zone/cache database.
- Fix EDE 22 time out detection.
- Split and simplify the use of EDE list implementation.
- Fix the cache findzonecut() implementation.
- DNSSEC EDE system tests on FIPS platform.
- Reduce the false sharing the dns_qpcache and dns_qpzone.

(From OE-Core rev: 1394e8befb305106695c91e2fe16c55483bf467f)

Signed-off-by: Wang Mingyu <wangmy@fujitsu.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briand@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-connectivity/bind/bind_9.20.6.bb

@@ -20,7 +20,7 @@ SRC_URI = "https://ftp.isc.org/isc/bind9/${PV}/${BPN}-${PV}.tar.xz \
            file://0001-avoid-start-failure-with-bind-user.patch \
            "
 
-SRC_URI[sha256sum] = "19274fd739c023772b4212a0b6c201cf4364855fa7e6a7d3db49693f55db1ab8"
+SRC_URI[sha256sum] = "ed7f54b44f84a7201a2fa7a949f3021ea568529bfad90fca664fd55c05104134"
 
 UPSTREAM_CHECK_URI = "https://ftp.isc.org/isc/bind9/"
 # follow the ESV versions divisible by 2