sed workaround for "datez"

dnsapi/dns_websupport.sh

@@ -1,3 +1,4 @@
+  
 #!/usr/bin/env sh
 
 # Acme.sh DNS API wrapper for websupport.sk
@@ -158,7 +159,7 @@ _ws_rest() {
   _debug2 api_secret "$WS_ApiSecret"
 
   timestamp=$(_time)
-  datez=$(date -u -d@"$timestamp" "+%Y-%m-%dT%H:%M:%S%z" 2>/dev/null || date -u -r "$timestamp" "+%Y-%m-%dT%H:%M:%S%z")
+  datez="$(_utc_date | sed "s/ /T/" | sed "s/$/+0000/")"
   canonical_request="${me} ${pa} ${timestamp}"
   signature_hash=$(printf "%s" "$canonical_request" | _hmac sha1 "$(printf "%s" "$WS_ApiSecret" | _hex_dump | tr -d " ")" hex)
   basicauth="$(printf "%s:%s" "$WS_ApiKey" "$signature_hash" | _base64)"