Update Source packages and TS version

Author: jamesmockett

dotcom-rendering/package.json

@@ -41,8 +41,8 @@
 		"@guardian/ophan-tracker-js": "2.8.0",
 		"@guardian/react-crossword": "11.1.0",
 		"@guardian/shimport": "1.0.2",
-		"@guardian/source": "11.3.0",
-		"@guardian/source-development-kitchen": "18.1.1",
+		"@guardian/source": "12.2.0",
+		"@guardian/source-development-kitchen": "23.0.0",
 		"@guardian/support-dotcom-components": "8.3.1",
 		"@guardian/tsconfig": "0.2.0",
 		"@playwright/test": "1.58.0",
@@ -151,10 +151,10 @@
 		"trusted-types": "2.0.0",
 		"ts-loader": "9.5.4",
 		"ts-unused-exports": "10.1.0",
-		"tslib": "2.6.2",
+		"tslib": "2.8.1",
 		"tsx": "4.6.2",
 		"type-fest": "4.21.0",
-		"typescript": "5.5.3",
+		"typescript": "5.9.3",
 		"typescript-json-schema": "0.64.0",
 		"unified": "11.0.5",
 		"valibot": "0.28.1",

dotcom-rendering/scripts/jest/setup.ts

@@ -107,7 +107,7 @@ if (!isServer) {
  * DOM and NodeJS versions of `TextDecoder`. This affect the running of the application and
  * allows us to update jsdom.
  */
-global.TextEncoder = TextEncoder;
+global.TextEncoder = TextEncoder as unknown as typeof global.TextEncoder;
 global.TextDecoder = TextDecoder as unknown as typeof global.TextDecoder;
 
 // Mocks the version number used by CDK, we don't want our tests to fail every time we update our cdk dependency.