[gimp] build: install MSYS2 autotools package.

[Jehan <jehanp src gnome org>]

commit b58c7a5c2ee61d2c80b056892733c30f48ee77b1
Author: Jehan <jehan girinstud io>
Date:   Mon Mar 28 16:34:48 2022 +0200

    build: install MSYS2 autotools package.
    
    Some tools have been moved. `aclocal` (and likely other tools, but this
    was the first one making an error in the deps-win*-native CI jobs) is
    now in `automake-wrapper` package, which itself is a dependency of
    `autotools`.
    
    Cf. https://github.com/msys2/MINGW-packages/issues/11114

 build/windows/gitlab-ci/build-deps-msys2.sh | 1 +
 build/windows/gitlab-ci/build-gimp-msys2.sh | 1 +
 2 files changed, 2 insertions(+)
---
diff --git a/build/windows/gitlab-ci/build-deps-msys2.sh b/build/windows/gitlab-ci/build-deps-msys2.sh
index e913a30c5d..5da73b3720 100644
--- a/build/windows/gitlab-ci/build-deps-msys2.sh
+++ b/build/windows/gitlab-ci/build-deps-msys2.sh
@@ -25,6 +25,7 @@ pacman --noconfirm -Suy
 pacman --noconfirm -S --needed \
     base-devel \
     mingw-w64-$MSYS2_ARCH-toolchain \
+    mingw-w64-$MSYS2_ARCH-autotools \
     mingw-w64-$MSYS2_ARCH-meson \
     \
     mingw-w64-$MSYS2_ARCH-cairo \
diff --git a/build/windows/gitlab-ci/build-gimp-msys2.sh b/build/windows/gitlab-ci/build-gimp-msys2.sh
index 47c6c854f0..6fc5bea235 100644
--- a/build/windows/gitlab-ci/build-gimp-msys2.sh
+++ b/build/windows/gitlab-ci/build-gimp-msys2.sh
@@ -24,6 +24,7 @@ pacman --noconfirm -Suy
 pacman --noconfirm -S --needed \
     base-devel \
     mingw-w64-$MSYS2_ARCH-toolchain \
+    mingw-w64-$MSYS2_ARCH-autotools \
     mingw-w64-$MSYS2_ARCH-ccache \
     \
     mingw-w64-$MSYS2_ARCH-appstream-glib \