Resolve cosmic-files warnings without masking

Parse text/uri-list according to the real clipboard format, make unsupported trash search explicit, and update the lockfile so the local cosmic-text patch is actually used instead of reported as unused.

src/clipboard.rs

@@ -132,9 +132,10 @@ impl TryFrom<(Vec<u8>, String)> for ClipboardPaste {
         match mime.as_str() {
             "text/uri-list" => {
                 let text = str::from_utf8(&data)?;
-                let lines = text.lines();
-
-                for line in text.lines() {
+                for line in text.lines().filter(|line| {
+                    let line = line.trim();
+                    !line.is_empty() && !line.starts_with('#')
+                }) {
                     let url = Url::parse(line)?;
                     match url.to_file_path() {
                         Ok(path) => paths.push(path),