chore(v2): release 2.1.9

[AztecBot]

Pending Aztec Packages v2 release

2.1.9 (2025-11-26)

Miscellaneous

• configure git in auto-tag (#18602) (90c2810)
• fix unbound var (#18607) (6e5a9fc)
• run fusaka test (0517a88)

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