bump MSRV to 1.83 (#16294)

According to our new MSRV policy (see
https://github.com/astral-sh/ruff/issues/16370 ), bump our MSRV to 1.83
(N - 2), and autofix some new clippy lints.

crates/ruff_python_ast/src/nodes.rs

@@ -2800,7 +2800,7 @@ impl Pattern {
     pub fn is_wildcard(&self) -> bool {
         match self {
             Pattern::MatchAs(PatternMatchAs { pattern, .. }) => {
-                pattern.as_deref().map_or(true, Pattern::is_wildcard)
+                pattern.as_deref().is_none_or(Pattern::is_wildcard)
             }
             Pattern::MatchOr(PatternMatchOr { patterns, .. }) => {
                 patterns.iter().all(Pattern::is_wildcard)

crates/ruff_python_ast/src/script.rs

@@ -67,7 +67,7 @@ impl ScriptTag {
         let mut lines = contents.lines();
 
         // Ensure that the first line is exactly `# /// script`.
-        if !lines.next().is_some_and(|line| line == "# /// script") {
+        if lines.next().is_none_or(|line| line != "# /// script") {
             return None;
         }