We only run the tsan job on Julia 1.8 and later

Author: tkf

.buildkite/pipelines/main/misc/sanitizers.yml

@@ -39,6 +39,8 @@ steps:
           workspaces:
             - "/cache/repos:/cache/repos"
     timeout_in_minutes: 120
+    if: | # We only run the `tsan` job on Julia 1.8 and later.
+      (pipeline.slug != "julia-release-1-dot-6") && (pipeline.slug != "julia-release-1-dot-7")
     commands: |
       echo "--- Build julia-debug runtime with TSAN"
       contrib/tsan/build.sh ./tmp/test-tsan -j$${JULIA_CPU_THREADS:?} -C src debug