Update dependency conan to v2.21.0 (#55)

renovate[bot] · web-flow · commit b21cc14ae8fe · 2025-09-30T09:00:10.000+02:00
Co-authored-by: renovate[bot] &lt;29139614+renovate[bot]@users.noreply.github.com&gt;
diff --git a/requirements.txt b/requirements.txt
@@ -1,3 +1,3 @@
 black==25.1.0
-conan==2.20.1
+conan==2.21.0
 PyYAML==6.0.2
