chore(main): release 1.2.0

[github-actions]

🤖 I have created a release beep boop

1.2.0 (2026-08-09)

Features

• sync source code with nodejs/node (#17) (47c21db)

Bug Fixes

• add missing header files during install (#27) (d714e74)
• handle edge cases and CI builds (57cae0f)
• handle reallocation failure gracefully in DataPointer::resize() (#37) (944c570)
• re-add more functions that are moved (2ceab38)
• re-add removed BignumPointer::bitLength() (0ba85e3)
• unconditionally include vector (ba39e40)
• use BN_GENCB_get_arg accessor for OpenSSL 3.x compatibility (#16) (afc7e12)
• use more strict compiler flags (fc401e3)
• use proper return value check for EVP_CIPHER_CTX_ctrl() (#36) (88555cc)

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