docopt.cpp: Add patch for CMake 4+ compatibility

Fix:

| CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
|   Compatibility with CMake < 3.5 has been removed from CMake.
|
|   Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
|   to tell CMake that the project requires at least <min> but has been updated
|   to work with policies introduced by <max> or earlier.
|
|   Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.
|
|
| -- Configuring incomplete, errors occurred!

Signed-off-by: Alper Ak <alperyasinak1@gmail.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>

meta-oe/recipes-extended/docopt.cpp/docopt.cpp_git.bb

@@ -18,8 +18,7 @@ PV = "0.6.3+git"
 
 SRC_URI = "\
     git://github.com/docopt/docopt.cpp.git;protocol=https;branch=master \
-"
-
+    file://0001-allow-build-with-cmake-4.patch"
 
 inherit cmake