ci: change the build to be verbose by default

Previously CI would use a non-verbose build (where exact compilation
and linking commands are not visible) and only if it fails, would
rerun the build in verbose mode.

Change this to use verbose in the initial build as well for two reasons:
1. It is useful to be able to see the exact compilation and linking
   commands even for successful builds, to e.g. confirm some particular
   flags are (not) used as expected.
2. In failed builds, if the failure is during linking, the repeated
   verbose build may not show a single compilation command because all
   files are already compiled, so compilation flags will remain hidden.

ci/test/03_test_script.sh

@@ -128,7 +128,7 @@ fi
 
 bash -c "cmake -S $BASE_ROOT_DIR $BITCOIN_CONFIG_ALL $BITCOIN_CONFIG || ( (cat $(cmake -P "${BASE_ROOT_DIR}/ci/test/GetCMakeLogFiles.cmake")) && false)"
 
-bash -c "cmake --build . $MAKEJOBS --target all $GOAL" || ( echo "Build failure. Verbose build follows." && cmake --build . --target all "$GOAL" --verbose ; false )
+bash -c "cmake --build . $MAKEJOBS --target all $GOAL --verbose" || ( echo "Build failure. Non-parallel build follows." && cmake --build . --target all "$GOAL" --verbose ; false )
 
 bash -c "${PRINT_CCACHE_STATISTICS}"
 du -sh "${DEPENDS_DIR}"/*/