Fix Psalm errors resulting from changes introduced in 3.9.4

src/Codec/CodecInterface.php

@@ -18,6 +18,8 @@ use Ramsey\Uuid\UuidInterface;
 
 /**
  * A codec encodes and decodes a UUID according to defined rules
+ *
+ * @psalm-immutable
  */
 interface CodecInterface
 {
@@ -30,8 +32,6 @@ interface CodecInterface
      * @return string Hexadecimal string representation of a UUID
      *
      * @psalm-return non-empty-string
-     *
-     * @psalm-pure
      */
     public function encode(UuidInterface $uuid): string;
 
@@ -44,8 +44,6 @@ interface CodecInterface
      * @return string Binary string representation of a UUID
      *
      * @psalm-return non-empty-string
-     *
-     * @psalm-pure
      */
     public function encodeBinary(UuidInterface $uuid): string;
 
@@ -57,8 +55,6 @@ interface CodecInterface
      *
      * @return UuidInterface An instance of a UUID decoded from a hexadecimal
      *     string representation
-     *
-     * @psalm-pure
      */
     public function decode(string $encodedUuid): UuidInterface;
 
@@ -70,8 +66,6 @@ interface CodecInterface
      *
      * @return UuidInterface An instance of a UUID decoded from a binary string
      *     representation
-     *
-     * @psalm-pure
      */
     public function decodeBytes(string $bytes): UuidInterface;
 }