Merge topic 'fix-mingw32-gcc11-ice' into release-3.22

26c9fbab46 MINGW-w64: Fix string(TIMESTAMP) build on 32bits.
f0eae9292b cmTimestamp: Declare component buffer before MinGW-specific code

Acked-by: Kitware Robot <kwrobot@kitware.com>
Merge-request: !6737