(conan-io#19937) libselinux/all: bump deps

* libselinux/all: bump deps

Generated and committed by [Conan Center Bump Deps](https://github.com/ericLemanissier/conan-center-index-bump-deps)
Find more updatable recipes in the [GitHub Pages](https://ericlemanissier.github.io/conan-center-index-bump-deps/)

* libselinux/all: bump deps

Generated and committed by [Conan Center Bump Deps](https://github.com/ericLemanissier/conan-center-index-bump-deps)
Find more updatable recipes in the [GitHub Pages](https://ericlemanissier.github.io/conan-center-index-bump-deps/)

Author: ericLemanissier

recipes/libselinux/all/conanfile.py

@@ -54,7 +54,7 @@ def validate(self):
     def build_requirements(self):
         self.tool_requires("flex/2.6.4")
         if not self.conf.get("tools.gnu:pkg_config", default=False, check_type=str):
-            self.tool_requires("pkgconf/1.9.5")
+            self.tool_requires("pkgconf/2.0.3")
 
     def source(self):
         for download in self.conan_data["sources"][self.version]: