Update anise requirement from 0.5.3 to 0.6.9 (#391)

Updates the requirements on [anise](https://github.com/nyx-space/anise) to permit the latest version.
- [Release notes](https://github.com/nyx-space/anise/releases)
- [Commits](nyx-space/anise@0.5.3...0.6.9)

---
updated-dependencies:
- dependency-name: anise
  dependency-version: 0.6.9
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.toml

@@ -134,7 +134,7 @@ flate2 = { version = "1", optional = true }
 maud = { version = "0.26", optional = true }
 nalgebra = { version = "0.33.0", optional = true }
 bitflags = { version = "2.3", features = ["serde"] } 
-anise = { version = "0.5.3", optional = true }
+anise = { version = "0.6.9", optional = true }
 hifitime = { version = "4.1", features = ["serde", "std"] }
 wkt = { version = "0.14", default-features = false, optional = true }
 gnss-rs = { version = "2.5", features = ["serde", "domes", "cospar"] }