Update mcr.microsoft.com/dotnet/sdk Docker tag to v9.0.302

Author: renovate[bot]

.devcontainer/Dockerfile

@@ -1,5 +1,5 @@
 # Refer to https://hub.docker.com/_/microsoft-dotnet-sdk for available versions
-FROM mcr.microsoft.com/dotnet/sdk:9.0.301-noble@sha256:4fd7d3e5aeb6cfb75e923a54cdb0b6e858b27ad3b517837917c57c2e632b5694
+FROM mcr.microsoft.com/dotnet/sdk:9.0.302-noble@sha256:b9f738e7bfa1581ae38a91365f26e21354fe09c6b9a4f2327f6cec588486d9e2
 
 # Installing mono makes `dotnet test` work without errors even for net472.
 # But installing it takes a long time, so it's excluded by default.