build: bump r3bl_ansi_color from 0.6.8 to 0.6.9 #18505

Job	Run time
Rust - build	1m 55s
Rust - build_docs	1m 30s
Rust - check_cargo_update	1m 35s
Rust - check_no_std	1m 40s
Rust - build_examples	2m 1s
Rust - check_nightly	1m 48s
Rust - build_nightly	1m 55s
Rust - build_release	4m 51s
Rust - lint_cargo_readme	56s
Rust - ockam_command_cross_build (linux_armv7)	7m 36s
Rust - lint_cargo_fmt_check	1m 11s
Rust - ockam_command_cross_build (macos_silicon)	10m 42s
Rust - lint_cargo_clippy	1m 58s
Rust - lint_cargo_deny	1m 0s
Rust - test	6m 35s
Rust - lint_cargo_toml_files	45s
Rust - test_nightly	6m 58s
Rust - test_ockam_command (linux_86)	2m 45s
Rust - lint_docs_ockam_io_rust_examples	31s
Rust - test_docs_rust_library_examples	0s
	58m 12s

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