Merge bitcoin/bitcoin#28211: Bump python minimum supported version to 3.9

fa25e8b0a1610553014c786428f146ef9c694678 doc: Recommend lint image build on every call (MarcoFalke)
faf70c1f330a92612cf381d32c791e9ba445d3f2 Bump python minimum version to 3.9 (MarcoFalke)
fa8996b930886da712c09ffe4b58016b36c2ae5b ci: Bump i686_multiprocess.sh to latest Ubuntu LTS (MarcoFalke)

Pull request description:

  All supported operating systems ship with python 3.9 (or later), so bumping the minimum should not cause any issues. A bump will allow new code to use new python 3.9 features.

  For reference:
  * https://packages.debian.org/bullseye/python3
  * https://packages.ubuntu.com/focal/python3.9
  * FreeBSD 12/13 also ships with 3.9
  * CentOS-like 8/9 also ships with 3.9 (and 3.11)
  * OpenSuse Leap also ships with 3.9 (and 3.11) https://software.opensuse.org/package/python311-base

  This is for Bitcoin Core 27.0 in 2024 (next year), not the soon upcoming 26.0 next month.

ACKs for top commit:
  Sjors:
    ACK fa25e8b0a1610553014c786428f146ef9c694678
  jamesob:
    ACK fa25e8b0a1610553014c786428f146ef9c694678 ([`jamesob/ackr/28211.1.MarcoFalke.bump_python_minimum_supp`](https://github.com/jamesob/bitcoin/tree/ackr/28211.1.MarcoFalke.bump_python_minimum_supp))

Tree-SHA512: 86c9f6ac4b5ba94a62ee6a6062dd48a8295d8611a39cdb5829f4f0dbc77aaa1a51edccc7a99275bf699143ad3a6fe826de426d413e5a465e3b0e82b86d10c32e

3 files changed, 7 insertions, 7 deletions

diff --git a/ci/test/00_setup_env_i686_multiprocess.sh b/ci/test/00_setup_env_i686_multiprocess.sh
index b11a387660..2cecf8510e 100755
--- a/ci/test/00_setup_env_i686_multiprocess.sh
+++ b/ci/test/00_setup_env_i686_multiprocess.sh
@@ -8,7 +8,7 @@ export LC_ALL=C.UTF-8
 
 export HOST=i686-pc-linux-gnu
 export CONTAINER_NAME=ci_i686_multiprocess
-export CI_IMAGE_NAME_TAG="docker.io/amd64/ubuntu:20.04"
+export CI_IMAGE_NAME_TAG="docker.io/amd64/ubuntu:22.04"
 export PACKAGES="cmake llvm clang g++-multilib"
 export DEP_OPTS="DEBUG=1 MULTIPROCESS=1"
 export GOAL="install"
diff --git a/ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh b/ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh
index 454a4b8dff..2d181f1bb8 100755
--- a/ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh
+++ b/ci/test/00_setup_env_native_nowallet_libbitcoinkernel.sh
@@ -7,9 +7,9 @@
 export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_native_nowallet_libbitcoinkernel
-export CI_IMAGE_NAME_TAG="docker.io/ubuntu:20.04"
-# Use minimum supported python3.8 and clang-10, see doc/dependencies.md
-export PACKAGES="python3-zmq clang-10 llvm-10 libc++abi-10-dev libc++-10-dev"
-export DEP_OPTS="NO_WALLET=1 CC=clang-10 CXX='clang++-10 -stdlib=libc++'"
+export CI_IMAGE_NAME_TAG="docker.io/debian:bullseye"
+# Use minimum supported python3.9 and clang-10 (or best-effort clang-11), see doc/dependencies.md
+export PACKAGES="python3-zmq clang-11 llvm-11 libc++abi-11-dev libc++-11-dev"
+export DEP_OPTS="NO_WALLET=1 CC=clang-11 CXX='clang++-11 -stdlib=libc++'"
 export GOAL="install"
 export BITCOIN_CONFIG="--enable-reduce-exports --enable-experimental-util-chainstate --with-experimental-kernel-lib --enable-shared"
diff --git a/ci/test/00_setup_env_native_qt5.sh b/ci/test/00_setup_env_native_qt5.sh
index 0fad95e2cb..32c8557eeb 100755
--- a/ci/test/00_setup_env_native_qt5.sh
+++ b/ci/test/00_setup_env_native_qt5.sh
@@ -7,8 +7,8 @@
 export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_native_qt5
-export CI_IMAGE_NAME_TAG="docker.io/ubuntu:20.04"
-# Use minimum supported python3.8 and gcc-9, see doc/dependencies.md
+export CI_IMAGE_NAME_TAG="docker.io/debian:bullseye"
+# Use minimum supported python3.9 and gcc-9, see doc/dependencies.md
 export PACKAGES="gcc-9 g++-9 python3-zmq qtbase5-dev qttools5-dev-tools libdbus-1-dev libharfbuzz-dev"
 export DEP_OPTS="NO_QT=1 NO_UPNP=1 NO_NATPMP=1 DEBUG=1 ALLOW_HOST_PACKAGES=1 CC=gcc-9 CXX=g++-9"
 export TEST_RUNNER_EXTRA="--previous-releases --coverage --extended --exclude feature_dbcrash"  # Run extended tests so that coverage does not fail, but exclude the very slow dbcrash