run cargo clean on long-running CI action to not run out of disk space

Actually we did that already, but now we clean even earlier.

Author: Byron

justfile

@@ -13,7 +13,11 @@ alias nt := nextest
 test: clippy check doc unit-tests journey-tests-pure journey-tests-small journey-tests-async journey-tests
 
 # run all tests, without clippy, including journey tests, try building docs (and clear target on CI)
-ci-test: check doc unit-tests clear-target journey-tests-pure journey-tests-small journey-tests-async journey-tests
+ci-test: check doc clear-target unit-tests ci-journey-tests
+
+# run all journey tests, but assure these are running after `cargo clean` (and workaround a just-issue of deduplicating targets)
+ci-journey-tests:
+    just clear-target journey-tests-pure journey-tests-small journey-tests-async journey-tests
 
 clear-target:
     cargo clean