ci: make sure we only read the first line from install/VERSION

Signed-off-by: Andres Gomez <agomez@igalia.com>
Reviewed-by: Martin Peres <martin.peres@mupuf.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10856>

.gitlab-ci/piglit/run.sh

@@ -15,7 +15,7 @@ export __LD_LIBRARY_PATH="$LD_LIBRARY_PATH:$INSTALL/lib/"
 
 # Sanity check to ensure that our environment is sufficient to make our tests
 # run against the Mesa built by CI, rather than any installed distro version.
-MESA_VERSION=$(cat "$INSTALL/VERSION" | sed 's/\./\\./g')
+MESA_VERSION=$(head -1 "$INSTALL/VERSION" | sed 's/\./\\./g')
 
 print_red() {
     RED='\033[0;31m'

.gitlab-ci/piglit/run_cl.sh

@@ -3,7 +3,7 @@
 set -e
 set -o xtrace
 
-VERSION=`cat install/VERSION`
+VERSION=`head -1 install/VERSION`
 
 if [ -d results ]; then
     cd results && rm -rf ..?* .[!.]* *