Merge trunk into develop

Author: shendy-a8c

.github/actions/setup-repo/action.yml

@@ -25,5 +25,5 @@ runs:
       uses: shivammathur/setup-php@v2
       with:
         php-version: ${{ inputs.php-version }}
-        tools: composer
+        tools: composer:2.5.0
         coverage: none

changelog/fix-5347-undefined-i18n-upe

@@ -0,0 +1,4 @@
+Significance: patch
+Type: fix
+
+UPE not loading on checkout page due to undefined i18n.

includes/payment-methods/class-upe-payment-gateway.php

@@ -139,7 +139,7 @@ public function register_scripts() {
 			true
 		);
 
-		$script_dependencies = [ 'stripe', 'wc-checkout' ];
+		$script_dependencies = [ 'stripe', 'wc-checkout', 'wp-i18n' ];
 
 		if ( $this->supports( 'tokenization' ) ) {
 			$script_dependencies[] = 'woocommerce-tokenization-form';