Update dependency conan to v2.31.1 (#637)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

solvers/cpp/mise.toml

@@ -1,7 +1,7 @@
 [tools]
 "pipx:clang-format" = "22.1.8"
 "pipx:gersemi" = "0.28.0"
-conan = "2.30.0"
+conan = "2.31.1"
 sccache = "0.16.0"
 
 [tasks.check]