Update dependency sbt/sbt to v1.9.9 (#72)

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [sbt/sbt](https://togithub.com/sbt/sbt) | patch | `1.9.8` -> `1.9.9` |

---

### Release Notes

<details>
<summary>sbt/sbt (sbt/sbt)</summary>

### [`v1.9.9`](https://togithub.com/sbt/sbt/releases/tag/v1.9.9): 1.9.9

[Compare Source](https://togithub.com/sbt/sbt/compare/v1.9.8...v1.9.9)

#### Bug fixes

- To fix `console` task on Scala 2.13.13, sbt 1.9.9 backports updates to
JLine 3.24.1 and JAnsi 2.4.0 by
[@&#8203;hvesalai](https://togithub.com/hvesalai) in
[sbt/sbt#7503
/
[sbt/sbt#7502
- To fix sbt 1.9.8's `UnsatisfiedLinkError` with `stat`, sbt 1.9.9
removes native code that was used to get the millisecond-precision
timestamp that was broken
([JDK-8177809](https://bugs.openjdk.org/browse/JDK-8177809)) on JDK 8
prior to [OpenJDK
8u302](https://mail.openjdk.org/pipermail/jdk8u-dev/2021-July/014118.html)
by [@&#8203;eed3si9n](https://togithub.com/eed3si9n) in
[sbt/io#367

**Full Changelog**: sbt/sbt@v1.9.8...v1.9.9

</details>

---

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project/build.properties

@@ -1 +1 @@
-sbt.version=1.9.8
+sbt.version=1.9.9