Support AWS_IO_TLS_CIPHER_PREF_TLSV1_2_2025_07 security policy

What's Changed

• Use windows-2025 image in CI by @sfod in #821
• Update aws-crt-cpp to v0.33.0 by @sfod in #820
• AutoTag PR for v1.38.0 by @bretambrose in #822

Full Changelog: v1.37.0...v1.38.0