Update typescript-eslint monorepo to v4.26.0

Author: renovate-bot

package-lock.json

@@ -50,8 +50,8 @@
 	"devDependencies": {
 		"@azure/functions": "1.2.3",
 		"@types/jest": "26.0.20",
-		"@typescript-eslint/eslint-plugin": "4.17.0",
-		"@typescript-eslint/parser": "4.17.0",
+		"@typescript-eslint/eslint-plugin": "4.26.0",
+		"@typescript-eslint/parser": "4.26.0",
 		"azure-function-context-mock": "0.0.7",
 		"azurite": "3.11.0",
 		"eslint": "7.21.0",