kata-deploy: Change default values of DEBUG

This can be easily done as there was no official release with the
previous values.

The reason we're doing so is because when using `yq` to replace the
value, even when forcing `--tag '!!str' "yes"`, the content is placed
without quotes, causing errors in our CI.

While here, we're also removing the fallback value for DEBUG, as it is
**always** set in the kata-deploy.yaml file.

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

tools/packaging/kata-deploy/kata-cleanup/base/kata-cleanup.yaml

@@ -27,7 +27,7 @@ spec:
             fieldRef:
               fieldPath: spec.nodeName
         - name: DEBUG
-          value: "no"
+          value: "false"
         - name: SHIMS
           value: "clh dragonball fc qemu-nvidia-gpu qemu-sev qemu-snp qemu-tdx qemu"
         - name: DEFAULT_SHIM