Update double-conversion to version 3.3.0 / rev 14 via SR 1093988
https://build.opensuse.org/request/show/1093988
by user pgajdos + dimstar_suse
- update to 3.3.0:
* Fix some compile warnings in Visual Studio
* Set permissions for github workflows
* Add flags to control trailing decimal and zero in exponent
form when input has one significant digit (forwarded request 1093823 from dirkmueller)