chore(deps): bump djb2a from 1.2.0 to 2.0.0

Bumps [djb2a](https://github.com/sindresorhus/djb2a) from 1.2.0 to 2.0.0.
- [Release notes](https://github.com/sindresorhus/djb2a/releases)
- [Commits](sindresorhus/djb2a@v1.2.0...v2.0.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/betterer/package.json

@@ -35,7 +35,7 @@
     "@phenomnomnominal/debug": "^0.2.5",
     "@phenomnomnominal/worker-require": "^0.0.34",
     "chokidar": "^3.3.1",
-    "djb2a": "^1.2.0",
+    "djb2a": "^2.0.0",
     "fast-memoize": "^2.5.2",
     "lines-and-columns": "^1.1.6",
     "minimatch": "^5.0.1",

yarn.lock

@@ -4606,10 +4606,10 @@ dir-glob@^3.0.1:
   dependencies:
     path-type "^4.0.0"
 
-djb2a@^1.2.0:
-  version "1.2.0"
-  resolved "https://registry.npmjs.org/djb2a/-/djb2a-1.2.0.tgz#a441d5f49b90b78aac52d2c44f5a6c49b3d1724b"
-  integrity sha512-rXrJYOPCGvHPYw8R2u/zczFTG3xXNqklrtT17vTPm8n/4a16PKEhrfgMwJ9Zyuz96PJwZzHuK2ChQO/SSChuKA==
+djb2a@^2.0.0:
+  version "2.0.0"
+  resolved "https://registry.npmjs.org/djb2a/-/djb2a-2.0.0.tgz#63ad541b06b821de4b81ea7d59420cad76ce41aa"
+  integrity sha512-mSkCTNSJRGjNUADzWx1ubTGxJh2IVY9uoc/WGozUIu0mgBUEvIyBn9uTs9jqFBbJxQthJMF3uDx0cnpdlAUo4Q==
 
 doctrine@^3.0.0:
   version "3.0.0"