Merge pull request #533 from Philippus/patch-6

Add Philippus' solution for day 25

Author: adpi2

docs/2023/puzzles/day25.md

@@ -8,5 +8,7 @@ https://adventofcode.com/2023/day/25
 
 ## Solutions from the community
 
+- [Solution](https://github.com/Philippus/adventofcode/blob/main/src/main/scala/adventofcode2023/Day25.scala) by [Philippus Baalman](https://github.com/philippus)
+
 Share your solution to the Scala community by editing this page.
 You can even write the whole article! [See here for the expected format](https://github.com/scalacenter/scala-advent-of-code/discussions/424)