chore: sign bt.exe only for releases

we can sign 120 .exe per year (so 60 releases, 2 signing per release with aarch64 and x86-64)

Author: viadezo1er

.github/workflows/release.yml

@@ -139,7 +139,7 @@ jobs:
         run: ${{ matrix.packages_install }}
 
       - name: Configure SSL.com signing env
-        if: ${{ runner.os == 'Windows' && env.HAS_SSLDOTCOM_SIGNING == 'true' }}
+        if: ${{ contains(toJSON(matrix.targets), 'windows') && env.HAS_SSLDOTCOM_SIGNING == 'true' && !fromJson(needs.plan.outputs.val).announcement_is_prerelease }}
         shell: bash
         env:
           SSLDOTCOM_USERNAME: ${{ secrets.SSLDOTCOM_USERNAME }}