main/gst-plugins-base: upgrade to 1.18.3

main/gst-plugins-base/APKBUILD

 # Maintainer: Natanael Copa <ncopa@alpinelinux.org>
 pkgname=gst-plugins-base
-pkgver=1.18.2
+pkgver=1.18.3
 pkgrel=0
 pkgdesc="GStreamer streaming media framework base plug-ins"
 url="https://gstreamer.freedesktop.org"
@@ -47,4 +47,4 @@ doc() {
 	replaces="${pkgname}1-doc"
 }
 
-sha512sums="e988b88df1f0263a3774c6cdda6ed750dd867221a83b97c467c7d7968a08c9663d4ae32ff39c55a7bc110a27342caf63028df1ff074a8e35482305335544bcc7  gst-plugins-base-1.18.2.tar.xz"
+sha512sums="5b1850c82d6c29e260cadcde6a412a75eac47b14a1778aa969b0a33540eb843f6cef2209c91a1d7230468ec9fbf00b53ca890b8c336378d39ea3cec0512f8e7f  gst-plugins-base-1.18.3.tar.xz"