[cmake] Update to 3.21.1

[JackBoosY]

Fixes #18952.

[JackBoosY]

Waiting for vcpkg next release to fix the regressions.

[BillyONeal]

Depends on #18983

[BillyONeal]

pistache should be fixed by #18994

[JackBoosY]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[dg0yt]

I already commented in #18983 (comment), but it may belong to this PR: Users are not notified that they need to re-bootstrap in order to enable cmake 3.21.0 support:

vcpkg/scripts/ports.cmake

Lines 28 to 29 in 111220b

	include("${SCRIPTS}/cmake/vcpkg_minimum_required.cmake")
	vcpkg_minimum_required(VERSION 2021-05-05)

[JackBoosY]

@BillyONeal
All the linux regressions are related to meson which in our pipeline system:

-- Found meson('0.53.2') but at least version 0.58.1 is required! Trying to use internal version if possible!
-- Configuring x64-linux-dbg
CMake Error at scripts/cmake/vcpkg_execute_required_process.cmake:127 (message):
    Command failed: /usr/bin/python3 /usr/bin/meson -Dfontconfig=enabled -Dfreetype=enabled -Dxlib=enabled -Dxcb=disabled -Dxlib-xcb=disabled -Dglib=enabled -Dtests=disabled -Dzlib=enabled -Dpng=enabled -Dspectre=auto -Dsymbol-lookup=disabled -Dgtk2-utils=disabled --buildtype plain --backend ninja --wrap-mode nodownload --native /mnt/vcpkg-ci/buildtrees/cairo/meson-nativ-x64-linux.log --default-library static --libdir lib --native /mnt/vcpkg-ci/buildtrees/cairo/meson-nativ-x64-linux-debug.log -Ddebug=true --prefix /mnt/vcpkg-ci/packages/cairo_x64-linux/debug --includedir ../include -Dcmake_prefix_path=['/mnt/vcpkg-ci/installed/x64-linux/debug','/mnt/vcpkg-ci/installed/x64-linux'] /mnt/vcpkg-ci/buildtrees/cairo/src/3627ff7ec2-8ced788615.clean
    Working Directory: /mnt/vcpkg-ci/buildtrees/cairo/x64-linux-dbg

meson.build:1:0: ERROR: Meson version is 0.53.2 but project requires >= 0.54.0

A full log can be found at /mnt/vcpkg-ci/buildtrees/cairo/x64-linux-dbg/meson-logs/meson-log.txt

In our pipeline image, internal meson version is 0.53.2, but we required 0.58.1 in vcpkg:

vcpkg/scripts/cmake/vcpkg_find_acquire_program.cmake

Lines 254 to 270 in 7dbc055

	elseif(VAR MATCHES "MESON")
	set(MESON_VERSION 0.58.1)
	set(PROGNAME meson)
	set(REQUIRED_INTERPRETER PYTHON3)
	set(APT_PACKAGE_NAME "meson")
	set(BREW_PACKAGE_NAME "meson")
	set(SCRIPTNAME meson meson.py)
	set(REF aeda7f249c4a5dbbecc52e44f382246a2377b5b0)
	set(PATHS ${DOWNLOADS}/tools/meson/meson-${REF})
	set(URL "https://github.com/mesonbuild/meson/archive/${REF}.tar.gz")
	set(ARCHIVE "meson-${REF}.tar.gz")
	#set(PATHS ${DOWNLOADS}/tools/meson/meson-${MESON_VERSION})
	#set(URL "https://github.com/mesonbuild/meson/releases/download/${MESON_VERSION}/meson-${MESON_VERSION}.tar.gz")
	#set(ARCHIVE "meson-${MESON_VERSION}.tar.gz")
	set(HASH 18a012a45274dbb4582e99fd69d920f38831e788d9860f9553c64847bedb1c2010ae0b5c0ef4a4350c03f5e0f95aaa0395378e1208109b59640c1a70b1e202d2)
	set(_vfa_SUPPORTED ON)
	set(VERSION_CMD --version)

[cenit]

there is already cmake 3.21.1, which provides some fixes for vs 2022 preview 2

[JackBoosY]

/azp run

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[JackBoosY]

The cmake regressions are fake now, need to rerun the pipeline tests.

[JackBoosY]

Depends on #19361.

[xavier2k6]

Depends on #19361.

That's merged now, any other hold-ups?

[JackBoosY]

Depends on #19453.

[JackBoosY]

Ping @dan-shaw for merge this PR.

[BillyONeal]

Thanks for your contribution!