fix: pycode environment produced an error

src/scanner.c

@@ -92,7 +92,7 @@ bool tree_sitter_latex_external_scanner_scan(void *payload, TSLexer *lexer,
                                              const bool *valid_symbols) {
   bool found = false;
   TSSymbol type = 0xFFFF;
-  for (int i = 0; i <= TRIVIA_RAW_ENV_MINTED; i++) {
+  for (int i = 0; i <= TRIVIA_RAW_ENV_PYCODE; i++) {
     if (valid_symbols[i]) {
       if (found) {
         return false;

test/corpus/environments.txt

@@ -214,6 +214,28 @@ Minted environment
         (text
           (word))))))
 
+================================================================================
+Pycode environment
+================================================================================
+
+\begin{pycode}
+  print()
+\end{pycode}
+
+--------------------------------------------------------------------------------
+
+(source_file
+  (pycode_environment
+    (begin
+      (curly_group_text
+        (text
+          (word))))
+    (source_code)
+    (end
+      (curly_group_text
+        (text
+          (word))))))
+
 ================================================================================
 Math environment
 ================================================================================