Change type of output_licenses from attr.license to attr.string_list.

BEGIN_PUBLIC

internal change

END PUBLIC

PiperOrigin-RevId: 751437233
Change-Id: I6b76f1005aab506dc4bdeb8993776525bdfd6812

Author: aiuto

java/common/rules/java_package_configuration.bzl

@@ -119,6 +119,6 @@ Corresponds to javac's --system flag.
 """,
         ),
         # buildifier: disable=attr-licenses
-        "output_licenses": attr.license() if hasattr(attr, "license") else attr.string_list(),
+        "output_licenses": attr.string_list(),
     },
 )

java/common/rules/java_plugin.bzl

@@ -46,7 +46,7 @@ from the annotation processor path using
 java.util.ServiceLoader</a>.)
        """),
         # buildifier: disable=attr-licenses
-        "output_licenses": attr.license() if hasattr(attr, "license") else attr.string_list(),
+        "output_licenses": attr.string_list(),
     },
     remove_attrs = ["runtime_deps", "exports", "exported_plugins"],
 )

java/common/rules/java_runtime.bzl

@@ -247,7 +247,7 @@ The feature version of the Java runtime. I.e., the integer returned by
             """,
         ),
         # buildifier: disable=attr-licenses
-        "output_licenses": attr.license() if hasattr(attr, "license") else attr.string_list(),
+        "output_licenses": attr.string_list(),
         "_windows_constraints": attr.label_list(
             default = [paths.join(semantics.PLATFORMS_ROOT, "os:windows")],
         ),