Update poco to fix GCS via proxy tunnel usage

GCS server does not handle requests with port, and simply report an
error:

```xml
    <?xml version="1.0"?>
    <?xml version='1.0' encoding='UTF-8'?>
    <Error>
        <Code>InvalidURI</Code>
        <Message>Couldn't parse the specified URI.</Message>
        <Details>Invalid URL: storage.googleapis.com:443/...</Details>
    </Error>
```

Removing the port fixes the issue. Note that there is port in the Host
header anyway.

Note, this is a problem only for proxy in a tunnel mode, since only it
sends such requests, other sends requests directly via HTTP methods.

Refs: ClickHouse/poco#22 (comment) (cc @Jokser)
Refs: ClickHouse/poco#63
Refs: ClickHouse#38069 (cc @CurtizJ)
Cc: @alesapin @kssenii

Signed-off-by: Azat Khuzhin <[email protected]>