fix(deps): upgrade @types/jest to 26

Author: jrolfs

package.json

@@ -57,7 +57,7 @@
     "@rollup/plugin-json": "^4.0.2",
     "@rollup/plugin-node-resolve": "^7.1.1",
     "@rollup/plugin-replace": "^2.3.1",
-    "@types/jest": "^25.1.3",
+    "@types/jest": "^26.0.4",
     "@typescript-eslint/eslint-plugin": "^2.25.0",
     "@typescript-eslint/parser": "^2.25.0",
     "arrify": "^2.0.1",

yarn.lock

@@ -1669,10 +1669,10 @@
     "@types/istanbul-lib-coverage" "*"
     "@types/istanbul-lib-report" "*"
 
-"@types/jest@^25.1.3":
-  version "25.2.3"
-  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-25.2.3.tgz#33d27e4c4716caae4eced355097a47ad363fdcaf"
-  integrity sha512-JXc1nK/tXHiDhV55dvfzqtmP4S3sy3T3ouV2tkViZgxY/zeUkcpQcQPGRlgF4KmWzWW5oiWYSZwtCB+2RsE4Fw==
+"@types/jest@^26.0.4":
+  version "26.0.4"
+  resolved "https://registry.yarnpkg.com/@types/jest/-/jest-26.0.4.tgz#d2e513e85aca16992816f192582b5e67b0b15efb"
+  integrity sha512-4fQNItvelbNA9+sFgU+fhJo8ZFF+AS4Egk3GWwCW2jFtViukXbnztccafAdLhzE/0EiCogljtQQXP8aQ9J7sFg==
   dependencies:
     jest-diff "^25.2.1"
     pretty-format "^25.2.1"