Update size of logo in README.md

Author: corentincarton

README.md

@@ -3,7 +3,7 @@
 <p align="center">
   <picture>
     <source srcset="https://github.com/ecmwf/logos/raw/refs/heads/main/logos/earthkit/earthkit-hydro-dark.svg" media="(prefers-color-scheme: dark)">
-    <img src="https://github.com/ecmwf/logos/raw/refs/heads/main/logos/earthkit/earthkit-hydro-light.svg" height="80">
+    <img src="https://github.com/ecmwf/logos/raw/refs/heads/main/logos/earthkit/earthkit-hydro-light.svg" height="120">
   </picture>
 </p>