build(deps-dev): Bump ajv from 6.12.6 to 8.18.0 and ajv-errors from 1.0.1 to 3.0.0 (#1309)

JIRA: CPOUI5FOUNDATION-859

PoC resolution in v4: SAP/ui5-project#427
v4 implementation: SAP/ui5-project#860

### Performance
There's a slight performance degradation after the update. This is an
expected behaviour as the code behind the generated validation function
has evolved. They have added more comprehensive checks in there and more
verbose logging. This is clearly visible in the coverage reports that we
have integrated for tha function in our test scenarios.

#### Comparisson

Command: `time ui5 build`

##### sap.m

###### After
info ProjectBuilder Build succeeded in 18 s  
info ProjectBuilder Executing cleanup tasks...  
ui5 build  36.37s user 11.09s system 246% cpu 19.237 total

###### Before
info ProjectBuilder Build succeeded in 17 s  
info ProjectBuilder Executing cleanup tasks...  
ui5 build  35.54s user 10.14s system 247% cpu 18.480 total

---

##### sap.ui.core

###### After
info ProjectBuilder Build succeeded in 9.42 s  
info ProjectBuilder Executing cleanup tasks...  
ui5 build  23.09s user 5.16s system 276% cpu 10.212 total

###### Before
info ProjectBuilder Build succeeded in 9.43 s  
info ProjectBuilder Executing cleanup tasks...  
ui5 build  22.54s user 5.43s system 273% cpu 10.242 total

Author: d3xter666

package-lock.json

@@ -80,8 +80,8 @@ class ValidationError extends Error {
 		}
 
 		let message = "Configuration ";
-		if (error.dataPath) {
-			message += chalk.underline(chalk.red(error.dataPath.substr(1))) + " ";
+		if (error.instancePath) {
+			message += chalk.underline(chalk.red(error.instancePath.substr(1))) + " ";
 		}
 
 		switch (error.keyword) {
@@ -107,7 +107,7 @@ class ValidationError extends Error {
 
 	static _findDuplicateError(error, errorIndex, errors) {
 		const foundIndex = errors.findIndex(($) => {
-			if ($.dataPath !== error.dataPath) {
+			if ($.instancePath !== error.instancePath) {
 				return false;
 			} else if ($.keyword !== error.keyword) {
 				return false;
@@ -131,13 +131,13 @@ class ValidationError extends Error {
 	}
 
 	static analyzeYamlError({error, yaml}) {
-		if (error.dataPath === "" && error.keyword === "required") {
+		if (error.instancePath === "" && error.keyword === "required") {
 			// There is no line/column for a missing required property on root level
 			return {line: -1, column: -1};
 		}
 
 		// Skip leading /
-		const objectPath = error.dataPath.substr(1).split("/");
+		const objectPath = error.instancePath.substr(1).split("/");
 
 		if (error.keyword === "additionalProperties") {
 			objectPath.push(error.params.additionalProperty);

packages/project/lib/validation/ValidationError.js

@@ -21,6 +21,7 @@
 		}
 	},
 	"if": {
+		"type": "object",
 		"properties": {
 			"type": {"const": null}
 		},
@@ -29,6 +30,7 @@
 	"then": {},
 	"else": {
 		"if": {
+			"type": "object",
 			"properties": {
 				"type": {"const": "task"}
 			}
@@ -38,6 +40,7 @@
 		},
 		"else": {
 			"if": {
+				"type": "object",
 				"properties": {
 					"type": {"const": "server-middleware"}
 				}
@@ -47,6 +50,7 @@
 			},
 			"else": {
 				"if": {
+					"type": "object",
 					"properties": {
 						"type": {"const": "project-shim"}
 					}