removed technicalUpgrade file

Author: kuldeep-jindal-db

README.md

@@ -40,9 +40,6 @@ Getting started
 - Spark framework (2.9.4) compatible with Tomcat 10
 - JDBC via JOOQ
 
-## Technical Upgrade Section
-- Please refer to the Waltz [Technical Upgrade](TechnicalUpgrade.md) page.
-
 ### Supported Databases
 
 - Postgres

TechnicalUpgrade.md

@@ -114,3 +114,22 @@ alias pkg-mssql='mvn clean package -P waltz-mssql,dev-mssql'
 mvn versions:set -DnewVersion=1.1.10
 mvn versions:commit
 ```
+
+# Technical Upgrade Info :
+# Java 17 Upgrade
+
+- Waltz has been upgraded to run on Java 17, moving from Java 8.
+- Developer Actions
+    - Please ensure your local development environment is configured to use JDK 17.
+    - Update your IDE settings (e.g., IntelliJ, Eclipse) to point to the JDK 17 installation.
+
+## Framework Upgrade
+- The web framework, Spark Java, has been upgraded from version 2.7.1 to 2.9.4.
+- Developer Impact
+    - There are no immediate code changes required for developers. The upgrade is backward compatible with our existing usage.
+    - This change helps keep Waltz current and secure by using a more recent version of its core web framework.
+
+## Key Changes
+- See [pom.xml](https://github.com/finos/waltz/pull/7400/changes#diff-9c5fb3d1b7e3b0f54bc5c4182965c4fe1f9023d449017cece3005d3f90e8e4d8) for a full list of Java dependencies against Java & Sparx upgrade.
+
+