Hopefully fix msys2 workflows

Apparently updating msys2 causes it to exit completely, great.

.github/build.sh

@@ -70,7 +70,7 @@ if [[ -z ${BSH_NO_PACKAGES-} ]]; then
 		;;
 	windows)
 		if [[ $BSH_BUILD_PLATFORM-$BSH_HOST_LIBC == windows-mingw ]]; then
-			pacman -Syu --noconfirm --needed mingw-w64-ucrt-x86_64-gcc
+			pacman -S --noconfirm --needed mingw-w64-ucrt-x86_64-gcc
 			if [[ $BSH_STATIC_DYNAMIC == static ]]; then
 				pacman -S --noconfirm --needed mingw-w64-ucrt-x86_64-{cmake,7zip} patch
 			else

.github/workflows/build.yaml

@@ -59,6 +59,8 @@ jobs:
       - uses: actions/checkout@v3
       - if: matrix.force_msys2_bash == 'yes'
         run: bash -c './.github/force-msys2-bash.sh'
+      - if: matrix.force_msys2_bash == 'yes'
+        run: bash -c 'pacman -Syu --noconfirm'
       - uses: actions/setup-python@v4
         with:
           python-version: '3.10'