chore: update version to 1.21.1-beta-1 and add new celebration SVG illustration

- Updated package.json and package-lock.json to version 1.21.1-beta-1
- Added new SVG illustration for celebration to the assets
- Updated Illustration.tsx to include the new celebration illustration in the illustration map

Author: AbhishekA1509

package-lock.json

@@ -1,6 +1,6 @@
 {
     "name": "@devtron-labs/devtron-fe-common-lib",
-    "version": "1.21.1-beta-0",
+    "version": "1.21.1-beta-1",
     "description": "Supporting common component library",
     "type": "module",
     "main": "dist/index.js",

package.json

@@ -1,5 +1,6 @@
 // NOTE: This file is auto-generated. Do not edit directly. Run the script `npm run generate-illustration` to update.
 
+import { ReactComponent as ImgCelebration } from '@Illustrations/img-celebration.svg'
 import ImgCode from '@Illustrations/img-code.webp'
 import ImgDevtronFreemium from '@Illustrations/img-devtron-freemium.webp'
 import { ReactComponent as ImgInstallFreemiumSaas } from '@Illustrations/img-install-freemium-saas.svg'
@@ -14,6 +15,7 @@ import { IllustrationBase } from './IllustrationBase'
 import { IllustrationBaseProps } from './types'
 
 export const illustrationMap = {
+    'img-celebration': ImgCelebration,
     'img-install-freemium-saas': ImgInstallFreemiumSaas,
     'img-install-via-aws-marketplace': ImgInstallViaAwsMarketplace,
     'img-mechanical-operation': ImgMechanicalOperation,