Bump submodules/privacy-reference-tests from a603ff9 to 6133e7d (#3274)

Bumps
[submodules/privacy-reference-tests](https://github.com/duckduckgo/privacy-reference-tests)
from `a603ff9` to `6133e7d`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/duckduckgo/privacy-reference-tests/commit/6133e7d9d9cd5f1b925cab1971b4d785dc639df7"><code>6133e7d</code></a>
Switch PR Checks to macos-14 free runner (<a
href="https://redirect.github.com/duckduckgo/privacy-reference-tests/issues/131">#131</a>)</li>
<li><a
href="https://github.com/duckduckgo/privacy-reference-tests/commit/df01089bf46e76b5e5fca32564b153458b0721c4"><code>df01089</code></a>
Fix fingerprinting test (<a
href="https://redirect.github.com/duckduckgo/privacy-reference-tests/issues/129">#129</a>)</li>
<li><a
href="https://github.com/duckduckgo/privacy-reference-tests/commit/afb4f6128a3b50d53ddcb1897ea1fb4df6858aa1"><code>afb4f61</code></a>
Add country to locale (<a
href="https://redirect.github.com/duckduckgo/privacy-reference-tests/issues/128">#128</a>)</li>
<li><a
href="https://github.com/duckduckgo/privacy-reference-tests/commit/a242bf03ff33b573eb716405b15924cc712d41c1"><code>a242bf0</code></a>
Add new params to tests (<a
href="https://redirect.github.com/duckduckgo/privacy-reference-tests/issues/127">#127</a>)</li>
<li>See full diff in <a
href="https://github.com/duckduckgo/privacy-reference-tests/compare/a603ff9af22ca3ff7ce2e7ffbfe18c447d9f23e8...6133e7d9d9cd5f1b925cab1971b4d785dc639df7">compare
view</a></li>
</ul>
</details>
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