Update README with LeetCode Daily Challenge

Author: jeremymanning

README.md

@@ -373,6 +373,7 @@ _**Note:** Our group is currently taking a break from grinding leetcode. The tab
 | June 25, 2025 | [2040](https://leetcode.com/problems/kth-smallest-product-of-two-sorted-arrays/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2040) | 🔴 Hard |
 | June 26, 2025 | [2311](https://leetcode.com/problems/longest-binary-subsequence-less-than-or-equal-to-k/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2311) | 🟡 Medium |
 | June 27, 2025 | [2014](https://leetcode.com/problems/longest-subsequence-repeated-k-times/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2014) | 🔴 Hard |
+| June 28, 2025 | [2099](https://leetcode.com/problems/find-subsequence-of-length-k-with-the-largest-sum/description/?envType=daily-question) | [Click here](https://github.com/ContextLab/leetcode-solutions/tree/main/problems/2099) | 🟢 Easy |
 
 # Join our discussion!