(devel/R-gert) Updated 1.6.0 to 1.9.2

1.9.2
  - Replace sprintf with snprintf for CRAN

1.9.1
  - Fix the Wstrict-prototype warnings
  - Use special static libgit2 bundle for openssl-3 distros.

1.9.0
  - Add support for the new ED25519 keys when authenticating over SSH

1.8.0
  - The static libgit2 for win/mac/linux are all 1.4.2 with a patched version
    of libssh 1.10.1. This should fix problems with the latest release versions
    of libgit2 and libssh2.
  - The patched libssh2 builds should now support RSA-SHA2, which re-enables
    authentication with GitHub using an RSA key.
  - On production Linux systems (x64 RHEL/Ubuntu) default to building using the
    static libgit2 because of above reasons. Set USE_SYSTEM_LIBGIT2=1 to force
    building against a local libgit2 on these platforms.

1.7.1
  - The static libgit2 for linux has been updated to 1.5.0 (this is only used
    on linux systems where no sufficient libgit2 is available).

1.7.0
  - git_status() gains parameter pathspec
  - git_ls() gains paremeter 'ref' and works with bare repositories

(mef)