codespell: Ignore .git

Otherwise the first line of commit messages is checked,
because text is found in .git/logs/HEAD, but only on
autobuild and not in CI (which does a shallow clone),
and not the whole commit message either, which is inconsistent.

BUG: https://bugzilla.samba.org/show_bug.cgi?id=15503

Signed-off-by: Andrew Bartlett <[email protected]>
Reviewed-by: Andreas Schneider <[email protected]>

Autobuild-User(master): Andrew Bartlett <[email protected]>
Autobuild-Date(master): Thu Oct 26 23:27:29 UTC 2023 on atb-devel-224

.codespellrc

@@ -1,4 +1,4 @@
 [codespell]
-skip = ./bin,./docs-xml/archives,./docs-xml/manpages/vfs_fruit.8.xml,./docs-xml/smbdotconf/browse/preferredmaster.xml,./lib/ldb/ldb_sqlite3/trees.ps,./libcli/util/ntstatus.h,./libcli/util/hresult.c,./python/samba/tests/blackbox/testdata,./source3/include/MacExtensions.h,./source3/selftest/ktest-krb5_ccache-2.txt,./source4/setup/display-specifiers,./source4/ldap_server/devdocs,./source4/selftest/provisions,./source4/setup/adprep/WindowsServerDocs,./source4/setup/display-specifiers,./source4/torture/vfs/fruit.c,./testdata,./third_party,*.IBM-DS,*.config,*.diff,*.dump,*.ldif,*.ldf,*.pdml,*.pem,*.po,*.schema
+skip = ./.git,./bin,./docs-xml/archives,./docs-xml/manpages/vfs_fruit.8.xml,./docs-xml/smbdotconf/browse/preferredmaster.xml,./lib/ldb/ldb_sqlite3/trees.ps,./libcli/util/ntstatus.h,./libcli/util/hresult.c,./python/samba/tests/blackbox/testdata,./source3/include/MacExtensions.h,./source3/selftest/ktest-krb5_ccache-2.txt,./source4/setup/display-specifiers,./source4/ldap_server/devdocs,./source4/selftest/provisions,./source4/setup/adprep/WindowsServerDocs,./source4/setup/display-specifiers,./source4/torture/vfs/fruit.c,./testdata,./third_party,*.IBM-DS,*.config,*.diff,*.dump,*.ldif,*.ldf,*.pdml,*.pem,*.po,*.schema
 ignore-regex = \\[t]
 ignore-words = .codespellignore