Erlang/OTP 25 compatibility for ./bootstrap

Replaces (deprecated in OTP 25) http_uri calls with uri_string.

bootstrap

@@ -156,7 +156,7 @@ set_httpc_options(_, []) ->
     ok;
 
 set_httpc_options(Scheme, Proxy) ->
-    {ok, {_, UserInfo, Host, Port, _, _}} = http_uri:parse(Proxy),
+    #{userinfo := UserInfo, host := Host, port := Port} = uri_string:parse(Proxy),
     httpc:set_options([{Scheme, {{Host, Port}, []}}], rebar),
     proxy_ipfamily(Host, inet:gethostbyname(Host)),
     set_proxy_auth(UserInfo).
@@ -721,7 +721,7 @@ set_proxy_auth(UserInfo) ->
     [Username, Password] = re:split(UserInfo, ":",
                                     [{return, list}, {parts,2}, unicode]),
     %% password may contain url encoded characters, need to decode them first
-    put(proxy_auth, [{proxy_auth, {Username, http_uri:decode(Password)}}]).
+    put(proxy_auth, [{proxy_auth, {Username, uri_string:percent_decode(Password)}}]).
 
 get_proxy_auth() ->
     case get(proxy_auth) of