Debug Conan releases.
Conan is still having issues with GitHub Actions.  I need to check this
variable during the next release.
@@ -19,6 +19,7 @@ if __name__ == "__main__":
if 'CI' in os.environ:
os.environ["CONAN_SYSREQUIRES_MODE"] = "enabled"
# Fix GitHub Actions version tag.
+ print("GITHUB_REF:" + os.environ.get("GITHUB_REF", "<undefined>"))
if os.environ.get("GITHUB_REF", "").startswith("/refs/tags/"):
version = os.environ["GITHUB_REF"].replace("/refs/tags/", "")
