golang: update to v1.19.2

golang: update to v1.19.2

Includes fixes for security vulnerabilities:
 * [CVE-2022-27664](https://github.com/advisories/GHSA-69cg-p879-7622) net/http: handle server errors after sending GOAWAY
 * [CVE-2022-32190](https://github.com/golang/go/issues/54385) net/url: JoinPath does not strip relative path components in all circumstances
 * [CVE-2022-2879](https://github.com/golang/go/issues/54853) archive/tar: unbounded memory consumption when reading headers
 * [CVE-2022-2880](https://github.com/golang/go/issues/54663) net/http/httputil: ReverseProxy should not forward unparseable query parameters
 * [CVE-2022-41715](https://github.com/golang/go/issues/55949) regexp/syntax: limit memory used by parsing regexps

Addresses the build failure:
* https://github.com/openwrt/packages/pull/19613

Signed-off-by: Stanislav Petrashov <s@petrashov.ru>