main/curl: upgrade to 7.80.0
Changes:
- CURLOPT_MAXLIFETIME_CONN: maximum allowed lifetime for conn reuse
- CURLOPT_PREREQFUNCTION: add new callback
- libssh2: add SHA256 fingerprint support
- urlapi: add curl_url_strerror()
- urlapi: support UNC paths in file: URLs on Windows
- wolfssl: allow setting of groups/curves