Drop 6.1 from Insiders nightly test matrix (#1839)

6.2 is latest stable release now

Author: award999

.github/workflows/nightly.yml

@@ -78,7 +78,7 @@ jobs:
     with:
       needs_token: true
       # Linux
-      linux_exclude_swift_versions: '[{"swift_version": "5.8"}, {"swift_version": "5.9"}, {"swift_version": "5.10"}, {"swift_version": "6.0"}, {"swift_version": "nightly-6.1"}, {"swift_version": "nightly-6.2"}, {"swift_version": "nightly-main"}]'
+      linux_exclude_swift_versions: '[{"swift_version": "5.8"}, {"swift_version": "5.9"}, {"swift_version": "5.10"}, {"swift_version": "6.0"}, {"swift_version": "6.1"}, {"swift_version": "nightly-6.1"}, {"swift_version": "nightly-6.2"}, {"swift_version": "nightly-main"}]'
       linux_env_vars: |
         NODE_VERSION=v20.19.0
         NODE_PATH=/usr/local/nvm/versions/node/v20.19.0/bin
@@ -91,7 +91,7 @@ jobs:
       linux_pre_build_command: . .github/workflows/scripts/setup-linux.sh
       linux_build_command: ./scripts/test.sh
       # Windows
-      windows_exclude_swift_versions: '[{"swift_version": "5.9"}, {"swift_version": "6.0"}, {"swift_version": "nightly-6.1"}, {"swift_version": "nightly-6.2"}, {"swift_version": "nightly"}]'
+      windows_exclude_swift_versions: '[{"swift_version": "5.9"}, {"swift_version": "6.0"}, {"swift_version": "6.1"}, {"swift_version": "nightly-6.1"}, {"swift_version": "nightly-6.2"}, {"swift_version": "nightly"}]'
       windows_env_vars: |
         CI=1
         VSCODE_VERSION=insiders