Update mcr.microsoft.com/dotnet/sdk:9.0.304-noble Docker digest to 1f7ccf8

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

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:9.0.304-noble@sha256:39ca82d31517e698dcd47f668d53041ec95cca8b783d8134c3053a9769492603
+FROM mcr.microsoft.com/dotnet/sdk:9.0.304-noble@sha256:1f7ccf88e076bc1cb1ddbd81959fb55b886b01851b092867bb7a638435fa1f1f
 
 # Installing mono makes `dotnet test` work without errors even for net472.
 # But installing it takes a long time, so it's excluded by default.