chore(.net agent): Add .NET Agent release notes for v10.47.1.

Author: dotnet-agent-team-bot

src/content/docs/release-notes/agent-release-notes/net-release-notes/net-agent-10-47-1.mdx

@@ -0,0 +1,37 @@
+---
+subject: .NET agent
+releaseDate: '2025-12-03'
+version: 10.47.1
+downloadLink: 'https://download.newrelic.com/dot_net_agent/latest_release'
+features: []
+bugs: ['Cache all environment variable access to reduce possible thread contention.','Ensure OpenAI LLM supportability metrics are recorded on all invocations.']
+security: []
+---
+
+### Fixes
+
+* Cache all environment variable access to reduce possible thread contention ([#3322](https://github.com/newrelic/newrelic-dotnet-agent/issues/3322)) ([e2a8109](https://github.com/newrelic/newrelic-dotnet-agent/commit/e2a81097d94a12e9dd06992f32302699073ad870))
+* Ensure OpenAI LLM supportability metrics are recorded on all invocations. ([#3320](https://github.com/newrelic/newrelic-dotnet-agent/issues/3320)) ([a4d7af8](https://github.com/newrelic/newrelic-dotnet-agent/commit/a4d7af84f24a530c0c264db439f49bf5be4771e5))
+
+### Checksums
+| File | SHA - 256  Hash |
+| ---| ---|
+| newrelic-dotnet-agent-10.47.1-1.x86_64.rpm | 2E01BB5F52ABB5F1A322D5888FE38D6F755E9C94E02252C9A65EDA598F6D9DD7 |
+| newrelic-dotnet-agent_10.47.1_amd64.deb | 0E4535C6F117F3BC8693110DD7FC54494032E087010CE38ED007B1F50D855843 |
+| newrelic-dotnet-agent_10.47.1_amd64.tar.gz | 3DB1E39F06ED3725EB0003A4608634E04B1901B06D510C690FC7BEC68AE2F784 |
+| newrelic-dotnet-agent_10.47.1_arm64.deb | BF6B15FC385905D53B4F81EF9E3EBA457D1A95298E75E8CC207F62626701B69A |
+| newrelic-dotnet-agent_10.47.1_arm64.tar.gz | 44033BE45CF837C5B560B3AE0D9086EF1B3A1F1C2985AD209D304893346F2503 |
+| NewRelicDotNetAgent_10.47.1_x64.msi | 2C2DA594CFC4A87AC618BCCED020C89695C4A95C48455AC748B5215E7E07D8C2 |
+| NewRelicDotNetAgent_10.47.1_x64.zip | F9997CCA1CE4C9DC7FBDF15A04CA8F7A25A3E1866A59CDFD21BDEDF1C9810DA4 |
+| NewRelicDotNetAgent_10.47.1_x86.msi | F7BBB2FD6E33D426060C7A78196AC575784743F7DB1EF75CDA2CA5EE38CCBBDE |
+| NewRelicDotNetAgent_10.47.1_x86.zip | 2E95DE873D98B60824641AD9D60A31CFE14ADE3709300AEE724477A89B622298 |
+
+
+### Updating your agent
+
+* Follow standard procedures to [update the .NET agent](/docs/agents/net-agent/installation-configuration/update-net-agent).
+* If you're using a particularly old agent, review the list of major changes and procedures for [updating legacy .NET agents](/docs/apm/agents/net-agent/installation/update-net-agent/#updating_older_net).
+
+We recommend updating to the latest agent version as soon as it's available. If you can't upgrade to the latest version, update your agents to a version no more than 90 days old. Read more about [keeping your agent up to date](/docs/new-relic-solutions/new-relic-one/install-configure/update-new-relic-agent).
+See the New Relic .NET agent [EOL policy doc](/docs/apm/agents/net-agent/getting-started/net-agent-eol-policy) for information about agent releases and support dates.
+