Remove PII sample values from UEBABehaviorsAnalysisWorkbook

Replaced hardcoded sample PII values with empty strings:
- AWS IAM ARN
- Incident time timestamp
- Time window values (24h and 12h)

Author: shlomimaa10-art

Solutions/UEBA Essentials/Workbooks/UEBABehaviorsAnalysisWorkbook.json

@@ -288,7 +288,7 @@
                                     "type": 1,
                                     "description": "Comma-separated list of entity values from the selected incident",
                                     "isRequired": false,
-                                    "value": "\"arn:aws:iam::648887187133:role/aws-service-role/eks.amazonaws.com/AWSServiceRoleForAmazonEKS\"",
+                                    "value": "",
                                     "key": "incident-entities-param"
                                 },
                                 {
@@ -299,7 +299,7 @@
                                     "type": 1,
                                     "description": "DateTime of the incident (e.g., 2026-01-08T12:00:00Z)",
                                     "isRequired": false,
-                                    "value": "2026-01-11T12:00:00Z",
+                                    "value": "",
                                     "key": "incident-time-param"
                                 },
                                 {
@@ -309,7 +309,7 @@
                                     "label": "Hours Before",
                                     "type": 1,
                                     "isRequired": true,
-                                    "value": "24h",
+                                    "value": "",
                                     "key": "window-before-param"
                                 },
                                 {
@@ -319,7 +319,7 @@
                                     "label": "Hours After",
                                     "type": 1,
                                     "isRequired": true,
-                                    "value": "12h",
+                                    "value": "",
                                     "key": "window-after-param"
                                 }
                             ],