git: update to v2.25.0

Update to git version v2.25.0.

Upstream renamed 'init_display_notes()' to 'load_display_notes()' in
commit 1e6ed5441a61b5085978e0429691e2e2425f6846 ("notes: rename to
load_display_notes()").

Signed-off-by: Christian Hesse <mail@eworm.de>
3 files changed