Update dependencies (Hopding#497)

Author: Hopding

jest.json

@@ -1,5 +1,6 @@
 {
   "preset": "ts-jest",
+  "testEnvironment": "node",
   "coverageReporters": ["html"],
   "testMatch": ["<rootDir>/tests/**/*.spec.ts"],
   "roots": ["src", "tests"],

package.json

@@ -86,30 +86,27 @@
   },
   "devDependencies": {
     "@pdf-lib/fontkit": "^1.0.0",
-    "@rollup/plugin-commonjs": "^11.1.0",
-    "@rollup/plugin-json": "^4.0.3",
-    "@rollup/plugin-node-resolve": "^7.1.3",
-    "@types/jest": "^25.2.1",
+    "@rollup/plugin-commonjs": "^13.0.0",
+    "@rollup/plugin-json": "^4.1.0",
+    "@rollup/plugin-node-resolve": "^8.0.1",
+    "@types/jest": "^26.0.0",
     "@types/node-fetch": "^2.5.7",
     "@types/pako": "^1.0.1",
-    "@zerollup/ts-transform-paths": "^1.7.17",
-    "downlevel-dts": "^0.4.0",
+    "@zerollup/ts-transform-paths": "^1.7.18",
+    "downlevel-dts": "^0.5.0",
     "flamebearer": "^1.1.3",
-    "http-server": "^0.12.1",
-    "jest": "^25.4.0",
+    "http-server": "^0.12.3",
+    "jest": "^26.0.1",
     "node-fetch": "^2.6.0",
     "prettier": "^2.0.5",
     "rimraf": "^3.0.2",
-    "rollup": "^1.32.1",
-    "rollup-plugin-terser": "^5.3.0",
-    "ts-jest": "^25.4.0",
-    "tslint": "^6.1.1",
+    "rollup": "^2.17.1",
+    "rollup-plugin-terser": "^6.1.0",
+    "ts-jest": "^26.1.0",
+    "tslint": "^6.1.2",
     "tslint-config-prettier": "^1.18.0",
     "ttypescript": "^1.5.10",
-    "typescript": "^3.8.3"
-  },
-  "resolutions": {
-    "jest/**/set-value": "^2.0.1"
+    "typescript": "^3.9.5"
   },
   "license": "MIT",
   "private": false,