Clean-up: Remove unsupported CLI version from testing matrix

We officially only support the previous 4 minor versions of the CLI, so v2.6.3 can go.

Author: shati-patel

.github/workflows/main.yml

@@ -139,7 +139,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest]
-        version: ['v2.6.3', 'v2.7.6', 'v2.8.5', 'v2.9.4', 'v2.10.5', 'v2.11.1', 'nightly']
+        version: ['v2.7.6', 'v2.8.5', 'v2.9.4', 'v2.10.5', 'v2.11.1', 'nightly']
     env:
       CLI_VERSION: ${{ matrix.version }}
       NIGHTLY_URL: ${{ needs.find-nightly.outputs.url }}