upgrade obfs4proxy package from v0.0.13-r0 to v0.0.13-r1 (CVE-2020-7919)

https://git.alpinelinux.org/aports/commit/testing/obfs4proxy?h=3.15-stable&id=ea04c3a72c5eb3a6fcacdfde5c14c29c3db670a2

Dockerfile

@@ -2,7 +2,7 @@
 FROM docker.io/alpine:3.16.0
 
 ARG TOR_PACKAGE_VERSION=0.4.7.8-r0
-ARG OBFS4PROXY_PACKAGE_VERSION=0.0.13-r0
+ARG OBFS4PROXY_PACKAGE_VERSION=0.0.13-r1
 RUN apk add --no-cache tor=$TOR_PACKAGE_VERSION \
     && apk add --no-cache obfs4proxy=$OBFS4PROXY_PACKAGE_VERSION \
         --repository http://dl-cdn.alpinelinux.org/alpine/edge/testing