queries: Inject regex into regular Rust string literals

Previously regex was injected only into raw string literals.

    Regex::new(r"[a-z]") // was highlighted
    Regex::new("[a-z]") // is now also highlighted

Author: the-mikedavis

runtime/queries/rust/injections.scm

@@ -55,14 +55,24 @@
   function: (scoped_identifier
     path: (identifier) @_regex (#any-of? @_regex "Regex" "RegexBuilder")
     name: (identifier) @_new (#eq? @_new "new"))
-  arguments: (arguments (raw_string_literal (string_content) @injection.content))
+  arguments:
+    (arguments
+      [
+        (string_literal (string_content) @injection.content)
+        (raw_string_literal (string_content) @injection.content)
+      ])
   (#set! injection.language "regex"))
 
 (call_expression
   function: (scoped_identifier
     path: (scoped_identifier (identifier) @_regex (#any-of? @_regex "Regex" "RegexBuilder") .)
     name: (identifier) @_new (#eq? @_new "new"))
-  arguments: (arguments (raw_string_literal (string_content) @injection.content))
+  arguments:
+    (arguments
+      [
+        (string_literal (string_content) @injection.content)
+        (raw_string_literal (string_content) @injection.content)
+      ])
   (#set! injection.language "regex"))
 
 ; Highlight SQL in `sqlx::query!()`, `sqlx::query_scalar!()`, and `sqlx::query_scalar_unchecked!()`