AWS Lambda image is now shipped with HTTP2 support

[vincentsarago]

curl 7.53.1 (x86_64-redhat-linux-gnu) libcurl/7.53.1 NSS/3.36 zlib/1.2.8 libidn2/0.16 libpsl/0.6.2 (+libicu/50.1.2) libssh2/1.4.2 nghttp2/1.21.1\nProtocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp \nFeatures: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz HTTP2 UnixSockets HTTPS-proxy PSL

We could remove the custom curl install but I'll need to check on GDAL side if version 7.53.1 is not too old

[vincentsarago]

ref: OSGeo/gdal#738

7.53.1 should be fine for GDAL