update a few jest versions to 26.6

Author: lucasfcosta

chapter2/4_end_to_end_tests/2_http_api_with_remove_item/package.json

@@ -6,7 +6,7 @@
   },
   "devDependencies": {
     "isomorphic-fetch": "^2.2.1",
-    "jest": "^24.9.0"
+    "jest": "^26.6.0"
   },
   "dependencies": {
     "koa": "^2.11.0",

chapter3/3_mocks_stubs_and_spies/3_manual_mocks/package.json

@@ -10,7 +10,7 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "jest": "^25.1.0"
+    "jest": "^26.6.0"
   },
   "dependencies": {
     "pino": "^5.16.0"

chapter5/1_eliminating_non_determinism/1_shared_resources/package.json

@@ -10,6 +10,6 @@
   "author": "",
   "license": "ISC",
   "devDependencies": {
-    "jest": "^25.2.3"
+    "jest": "^26.6.0"
   }
 }

chapter5/1_eliminating_non_determinism/3_dealing_with_time/package.json

@@ -7,7 +7,7 @@
   },
   "devDependencies": {
     "@sinonjs/fake-timers": "github:sinonjs/fake-timers",
-    "jest": "^24.9.0",
+    "jest": "^26.6.0",
     "supertest": "^4.0.2"
   },
   "dependencies": {

chapter6/1_introducing_jsdom/3_jest_jsdom/package.json

@@ -13,6 +13,6 @@
   "dependencies": {},
   "devDependencies": {
     "browserify": "^16.5.1",
-    "jest": "^24.9.0"
+    "jest": "^26.6.0"
   }
 }

chapter6/2_asserting_on_the_dom/4_finding_with_dom_testing_library/package.json

@@ -15,6 +15,6 @@
     "@testing-library/dom": "^7.2.2",
     "browserify": "^16.5.1",
     "http-server": "^0.12.1",
-    "jest": "^24.9.0"
+    "jest": "^26.6.0"
   }
 }