Merge tag 'v2.35.0-rc1'

Git 2.35-rc1

* tag 'v2.35.0-rc1':
  Git 2.35-rc1
  reftable tests: avoid "int" overflow, use "uint64_t"
  reftable: avoid initializing structs from structs
  t1450-fsck: exec-bit is not needed to make loose object writable
  refs API: use "failure_errno", not "errno"
  Last minute fixes before -rc1
  build: NonStop ships with an older zlib
  packfile: fix off-by-one error in decoding logic
  t/gpg: simplify test for unknown key
  branch: missing space fix at line 313
  fmt-merge-msg: prevent use-after-free with signed tags
  cache.h: drop duplicate `ensure_full_index()` declaration
  lazyload: use correct calling conventions
  fetch: fix deadlock when cleaning up lockfiles in async signals