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What changed, and why it matters

This commit changes a single word in a build script's status message, from 'if it is possible' to 'whether it is possible'. There is no functional, security, or behavioral change to the software.

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Changed components

### .github/scripts/can-build.sh
@@ -9,6 +9,6 @@ compose() {
   fi
 }
 
-echo "Checking if it is possible to build Bitcoin only..."
+echo "Checking whether it is possible to build Bitcoin only..."
 cd "$(dirname "$0")/../../BTCPayServer.Tests"
 compose -f "docker-compose.yml" build