only match filters that are descendants or data/collection

otherwise action filters are also checked which results in an error
since there is not text content.

lib/galaxy/tool_util/linters/output.py

@@ -83,7 +83,7 @@ def lint(cls, tool_source: "ToolSource", lint_ctx: "LintContext"):
         tool_xml = getattr(tool_source, "xml_tree", None)
         if not tool_xml:
             return
-        for filter in tool_xml.findall("./outputs//filter"):
+        for filter in tool_xml.findall("./outputs/*/filter"):
             try:
                 ast.parse(filter.text, mode="eval")
             except Exception as e: