Jenkins: Deploy temporary workaround for broken MSYS2 CMake update

.ci/build.sh

@@ -317,6 +317,9 @@ then
 			done
 		fi
 
+		# Temporary workaround for broken CMake 3.26.1-1 package.
+		pacman -Qe | grep -qE "^$MINGW_PACKAGE_PREFIX-cmake 3.26.1-1$" && pacman -U --noconfirm "https://repo.msys2.org/mingw/$(echo $MSYSTEM | tr '[:upper:]' '[:lower:]')/$MINGW_PACKAGE_PREFIX-cmake-3.26.0-1-any.pkg.tar.zst"
+
 		# Generate a new freetype DLL for this architecture.
 		rm -f "$freetype_dll"