fix(deps): add flaky ClearlyDefined packages to EXCLUDED files

The license:check CI job (--check mode) queries ClearlyDefined live without
triggering re-harvest, causing intermittent failures for packages that exist
in ClearlyDefined but aren't always returned by the live API:

  date-fns@3.6.0 (prod)
  cssnano-preset-default@6.0.1 (dev)
  eslint-config-prettier@9.0.0 (dev)
  eslint-plugin-no-relative-import-paths@1.5.3 (dev)

Adding them to EXCLUDED gives CI a stable fallback so the check does not
depend on ClearlyDefined returning results on every query.

Assisted-by: Claude Sonnet 4.6
Signed-off-by: Oleksii Orel <oorel@redhat.com>

Author: olexii4

.deps/EXCLUDED/dev.md

@@ -35,3 +35,7 @@ This file contains a manual contribution to .deps/dev.md and it's needed because
 | `pidtree@0.6.1` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/pidtree/0.6.1) |
 | `semver@7.8.3` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/semver/7.8.3) |
 | `tinyexec@1.2.4` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/tinyexec/1.2.4) |
+| `cssnano-preset-default@6.0.1` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/cssnano-preset-default/6.0.1) |
+| `eslint-config-prettier@9.0.0` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/eslint-config-prettier/9.0.0) |
+| `eslint-plugin-no-relative-import-paths@1.5.3` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/eslint-plugin-no-relative-import-paths/1.5.3) |
+

.deps/EXCLUDED/prod.md

@@ -10,3 +10,5 @@ This file lists dependencies that do not need CQs or auto-detection does not wor
 | `undici@7.28.0` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/undici/7.28.0) |
 | `@hapi/wreck@18.1.2` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/@hapi/wreck/18.1.2) |
 | `joi@17.13.4` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/joi/17.13.4) |
+| `date-fns@3.6.0` | [clearlydefined](https://clearlydefined.io/definitions/npm/npmjs/-/date-fns/3.6.0) |
+