Update Conan to v2.15.1 (#7151)

Author: DennisOSRM

.github/workflows/osrm-backend.yml

@@ -52,7 +52,7 @@ jobs:
 
         python3 -m venv .venv
         source .venv/Scripts/Activate
-        python3 -m pip install conan==2.15.0
+        python3 -m pip install conan==2.15.1
         conan profile detect --force
 
         cmake -DCMAKE_BUILD_TYPE=Release -DENABLE_CONAN=ON -DENABLE_NODE_BINDINGS=ON ..
@@ -493,7 +493,7 @@ jobs:
         if [[ "${ENABLE_CONAN}" == "ON" ]]; then
           python3 -m venv .venv
           source .venv/bin/activate
-          python3 -m pip install conan==2.15.0
+          python3 -m pip install conan==2.15.1
           conan profile detect --force
         fi