Stabilize two flake8-pyi rules (#12860)

Author: MichaReiser

crates/ruff_linter/src/codes.rs

@@ -779,9 +779,9 @@ pub fn code_to_rule(linter: Linter, code: &str) -> Option<(RuleGroup, Rule)> {
         (Flake8Pyi, "055") => (RuleGroup::Stable, rules::flake8_pyi::rules::UnnecessaryTypeUnion),
         (Flake8Pyi, "056") => (RuleGroup::Stable, rules::flake8_pyi::rules::UnsupportedMethodCallOnAll),
         (Flake8Pyi, "058") => (RuleGroup::Stable, rules::flake8_pyi::rules::GeneratorReturnFromIterMethod),
-        (Flake8Pyi, "057") => (RuleGroup::Preview, rules::flake8_pyi::rules::ByteStringUsage),
+        (Flake8Pyi, "057") => (RuleGroup::Stable, rules::flake8_pyi::rules::ByteStringUsage),
         (Flake8Pyi, "059") => (RuleGroup::Preview, rules::flake8_pyi::rules::GenericNotLastBaseClass),
-        (Flake8Pyi, "062") => (RuleGroup::Preview, rules::flake8_pyi::rules::DuplicateLiteralMember),
+        (Flake8Pyi, "062") => (RuleGroup::Stable, rules::flake8_pyi::rules::DuplicateLiteralMember),
         (Flake8Pyi, "063") => (RuleGroup::Preview, rules::flake8_pyi::rules::PrePep570PositionalArgument),
         (Flake8Pyi, "064") => (RuleGroup::Preview, rules::flake8_pyi::rules::RedundantFinalLiteral),
         (Flake8Pyi, "066") => (RuleGroup::Preview, rules::flake8_pyi::rules::BadVersionInfoOrder),