btrfs-progs: ci: enable gcc 14 on Tumbleweed

GCC 14 is available, add it as default compiler to tumbleweed image to
catch new warnings.

Signed-off-by: David Sterba <dsterba@suse.com>

Author: kdave

ci/images/ci-openSUSE-tumbleweed-x86_64/Dockerfile

@@ -25,9 +25,9 @@ RUN zypper install -y --no-recommends glibc-devel-static libblkid-devel-static \
 	    libcom_err-devel-static libext2fs-devel-static libuuid-devel-static \
 	    libzstd-devel-static lzo-devel-static zlib-devel-static
 
-RUN zypper install -y --no-recommends gcc13
 RUN zypper install -y --no-recommends libgcrypt-devel libsodium-devel libkcapi-devel \
 	   libbotan-devel libopenssl-3-devel
+RUN zypper install -y --no-recommends gcc14
 
 COPY ./test-build .
 COPY ./run-tests .