l10n: po-id for 2.47

Update following components:

  * add-patch.c
  * apply.c
  * builtin/check-mailmap.c
  * builtin/checkout.c
  * builtin/commit.c
  * builtin/config.c
  * builtin/fetch.c
  * builtin/gc.c
  * builtin/multi-pack-index.c
  * builtin/refs.c
  * builtin/show-refs.c
  * builtin/sparse-checkout.c
  * builtin/submodule--helper.c
  * loose.c
  * midx-write.c
  * midx.c
  * object-file.c
  * ref-filter.c
  * refs/file-backend.c
  * scalar.c
  * setup.c
  * git-send-email.perl

Translate following new components:

  * t/unit-tests/unit-tests.c

Signed-off-by: Bagas Sanjaya <[email protected]>