fix

Signed-off-by: jason yang <jasonyangshadow@gmail.com>

dist/debian/rules

@@ -98,7 +98,7 @@ override_dh_auto_install:
 	@dh_auto_install -Smakefile -D$(DEB_SC_BUILDDIR)
 	@./scripts/install-dependencies $(pkgdir)/usr/libexec
 # Apparmor userns profile needed on Ubuntu 24.04, or unconfined placeholder for older versions.	
-	if ([ $(OS_MAJOR) -gt 23 ] || [[ $(OS_VERSION) = "23.10" ]]) && [[ $(OS_NAME) = "Ubuntu" ]]; then \
+	if ([ $(OS_MAJOR) -gt 23 ] || [ "$OS_VERSION" = "23.10" ]) && [[ $(OS_NAME) = "Ubuntu" ]]; then \
 		echo "Ubuntu 24.04 or newer - installing apparmor userns profile"; \
 		install -D -m 644 dist/debian/apparmor-userns $(pkgdir)/etc/apparmor.d/apptainer; \
 	else \