Merge pull request #2932 from TheBlueMatt/2023-04-ci-fix

Avoid new "out of disk space" issues in CI

Author: tnull

ci/ci-tests.sh

@@ -173,5 +173,7 @@ fi
 
 echo -e "\n\nTest cfg-flag builds"
 RUSTFLAGS="--cfg=taproot" cargo test --verbose --color always -p lightning
+[ "$CI_MINIMIZE_DISK_USAGE" != "" ] && cargo clean
 RUSTFLAGS="--cfg=async_signing" cargo test --verbose --color always -p lightning
+[ "$CI_MINIMIZE_DISK_USAGE" != "" ] && cargo clean
 RUSTFLAGS="--cfg=dual_funding" cargo test --verbose --color always -p lightning