Update YAML PECL package version to 2.3.0

Author: macbre

Dockerfile

@@ -48,10 +48,11 @@ RUN docker-php-ext-install \
 	xsl
 
 # install yaml extensions from PECL
-# https://pecl.php.net/package/yaml/2.2.4
+# https://pecl.php.net/package-changelog.php?package=yaml
+# https://pecl.php.net/package/yaml/2.3.0
 RUN apk add --virtual build-deps autoconf gcc make g++ zlib-dev \
 	&& pecl channel-update pecl.php.net \
-	&& pecl install yaml-2.2.4 && docker-php-ext-enable yaml \
+	&& pecl install yaml-2.3.0 && docker-php-ext-enable yaml \
 	&& apk del build-deps
 
 RUN which php; php -v; php -m; php -i | grep ini