[openssl/openssl] 6a9255: Update gitignore

[Todd Short]

  Branch: refs/heads/master
  Home:   https://github.com/openssl/openssl
  Commit: 6a9255054b345026bc847ddad72f2da93f30ce4c
      https://github.com/openssl/openssl/commit/6a9255054b345026bc847ddad72f2da93f30ce4c
  Author: Todd Short <tshort at akamai.com>
  Date:   2022-08-19 (Fri, 19 Aug 2022)

  Changed paths:
    M .gitignore

  Log Message:
  -----------
  Update gitignore

Add test/timing_load_creds

Reviewed-by: Tomas Mraz <tomas at openssl.org>
Reviewed-by: Matt Caswell <matt at openssl.org>
Reviewed-by: Paul Dale <pauli at openssl.org>
(Merged from https://github.com/openssl/openssl/pull/19021)