Remove EOL macOS versions from the supported platforms list

Author: jketema

docs/codeql/reusables/supported-platforms.rst

@@ -14,19 +14,11 @@
    Windows,"Windows 10 / Windows Server 2019
 
    Windows 11 / Windows Server 2022","x86-64"
-   macOS,"macOS 10.15 Catalina
-
-   macOS 11 Big Sur
-
-   macOS 12 Monterey
+   macOS,"macOS 12 Monterey
 
    macOS 13 Ventura
 
-   macOS 14 Sonoma","x86-64
-
-   x86-64, arm64 (Apple Silicon)
-
-   x86-64, arm64 (Apple Silicon)
+   macOS 14 Sonoma","x86-64, arm64 (Apple Silicon)
 
    x86-64, arm64 (Apple Silicon)