tests/docker: bump emsdk-wasm64-cross zlib version to 1.3.2

Container image builds have started failing because zlib.net no longer hosts the 1.3.1 tarball. Move to the 1.3.2 release from February 17, 2026. $ make docker-image-emsdk-wasm64-cross changing dir to build for make "docker-image-emsdk-wasm64-cross"... make[1]: Entering directory 'qemu/build' BUILD emsdk-wasm64-cross ... xz: (stdin): File format not recognized tar: Child returned status 1 tar: Error is not recoverable: exiting now Error: building at STEP "RUN curl -Ls https://zlib.net/zlib-$ZLIB_VERSION.tar.xz | tar xJC /zlib --strip-components=1": while running runtime: exit status 2 make[1]: *** [qemu/tests/docker/Makefile.include:43: docker-image-emsdk-wasm64-cross] Error 2 make[1]: Leaving directory 'qemu/build' make: *** [GNUmakefile:6: build] Error 2 Cc: Kohei Tokunaga <ktokunaga.mail@gmail.com> Cc: Brian Cain <brian.cain@oss.qualcomm.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Pierrick Bouvier <pierrick.bouvier@oss.qualcomm.com> Message-id: 20260625193320.260312-1-stefanha@redhat.com Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>