Upgrade/Install: Update sodium_compat to v1.17.0.

The latest version of sodium_compat includes fixes for PHP 8.1 compatibility and a fix for PHP 5.6 compatibility.

A full list of changes in this update can be found on GitHub:
paragonie/sodium_compat@v1.16.1...v1.17.0

Follow-up to [49741], [51002].

Props jrf.
Fixes #53907.

git-svn-id: https://develop.svn.wordpress.org/trunk@51591 602fd350-edb4-49c9-b593-d223f7449a82

Author: SergeyBiryukov

src/wp-includes/sodium_compat/src/Compat.php

@@ -3013,7 +3013,7 @@ public static function crypto_stream($len, $nonce, $key)
     /**
      * DANGER! UNAUTHENTICATED ENCRYPTION!
      *
-     * Unless you are following expert advice, do not used this feature.
+     * Unless you are following expert advice, do not use this feature.
      *
      * Algorithm: XSalsa20
      *
@@ -3112,7 +3112,7 @@ public static function crypto_stream_xchacha20($len, $nonce, $key, $dontFallback
     /**
      * DANGER! UNAUTHENTICATED ENCRYPTION!
      *
-     * Unless you are following expert advice, do not used this feature.
+     * Unless you are following expert advice, do not use this feature.
      *
      * Algorithm: XChaCha20
      *

src/wp-includes/sodium_compat/src/Core/ChaCha20/Ctx.php

@@ -69,6 +69,7 @@ public function __construct($key = '', $iv = '', $counter = '')
      * @return void
      * @psalm-suppress MixedArrayOffset
      */
+    #[ReturnTypeWillChange]
     public function offsetSet($offset, $value)
     {
         if (!is_int($offset)) {
@@ -86,6 +87,7 @@ public function offsetSet($offset, $value)
      * @param int $offset
      * @return bool
      */
+    #[ReturnTypeWillChange]
     public function offsetExists($offset)
     {
         return isset($this->container[$offset]);
@@ -98,6 +100,7 @@ public function offsetExists($offset)
      * @return void
      * @psalm-suppress MixedArrayOffset
      */
+    #[ReturnTypeWillChange]
     public function offsetUnset($offset)
     {
         unset($this->container[$offset]);
@@ -110,6 +113,7 @@ public function offsetUnset($offset)
      * @return mixed|null
      * @psalm-suppress MixedArrayOffset
      */
+    #[ReturnTypeWillChange]
     public function offsetGet($offset)
     {
         return isset($this->container[$offset])