chore: release 3.9.0 (#608)

* chore: release 3.9.0

* chore: remove duplicate entry from CHANGELOG

Co-authored-by: token-generator-app[bot] <82042599+token-generator-app[bot]@users.noreply.github.com>
Co-authored-by: Eduardo Bouças <mail@eduardoboucas.com>

Author: token-generator-app[bot]

CHANGELOG.md

@@ -7,6 +7,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 
+## [3.9.0](https://www.github.com/netlify/build-image/compare/v3.8.2...v3.9.0) (2021-08-10)
+
+
+### Features
+
+* cache directory for Rust functions ([#607](https://www.github.com/netlify/build-image/issues/607)) ([92b86a2](https://www.github.com/netlify/build-image/commit/92b86a2f3aaafcfba6751a6da3826009d380f53b))
+
 ### [3.8.2](https://www.github.com/netlify/build-image/compare/v3.8.1...v3.8.2) (2021-07-19)
 
 
@@ -146,7 +153,8 @@ Generated by [`auto-changelog`](https://github.com/CookPete/auto-changelog).
 - Merge commit 8a965d0d4022211b40827efae49d344d9dec8783 (no conflict) [`21ae6eb`](https://github.com/netlify/build-image/commit/21ae6ebde094da7e2c17896b095786e83dd9262d)
 - Cache .cargo/bin and .rustup too [`932e0af`](https://github.com/netlify/build-image/commit/932e0af1923e27a034fae9c8e557b615f772f608)
 - CLEANUP [`7084515`](https://github.com/netlify/build-image/commit/70845157f66119081008b255200faa056c89eb32)
-- Update included_software.md [`af4c1f7`](https://github.com/netlify/build-image/commit/af4c1f7e012ad6f46b7e80f475c177632ca5ad61)
+- Update included_software.md
+ [`af4c1f7`](https://github.com/netlify/build-image/commit/af4c1f7e012ad6f46b7e80f475c177632ca5ad61)
 - Fix comment [`71ac638`](https://github.com/netlify/build-image/commit/71ac6380a039b5fc11bf801deb4625607f854804)
 - Do not install toolchain by default [`0da465e`](https://github.com/netlify/build-image/commit/0da465e848bc64e3f219a04aed3bf88e554699db)
 - Merge commit fa6e85ee8d61e9ca22f0d26fa3ebf5fce3ef2fec (no conflict) [`d39611c`](https://github.com/netlify/build-image/commit/d39611c25b35130759559aac62ab0e85bd75a3e2)

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@netlify/build-image",
-  "version": "3.8.2",
+  "version": "3.9.0",
   "description": "This repository contains the tools to make the build image Netlify uses to build a site from git (for continuous deployment)",
   "main": "index.js",
   "private": "true",