Use $EVEREST_DEPENDENCY_MANAGER variable to trigger edm release

This ensures that the same edm is invoked as in the rest of the code
Fixes an issues where it would not be found in certain venv configurations

Signed-off-by: Kai-Uwe Hermann <kai-uwe.hermann@pionix.de>

dependency_manager/src/edm_tool/templates/cpm.jinja

@@ -52,7 +52,7 @@ endif()
 {% endfor %}
 
 execute_process(
-    COMMAND edm release --everest-core-dir ${PROJECT_SOURCE_DIR} --build-dir ${CMAKE_BINARY_DIR} --out ${CMAKE_BINARY_DIR}/release.json
+    COMMAND "${EVEREST_DEPENDENCY_MANAGER}" release --everest-core-dir ${PROJECT_SOURCE_DIR} --build-dir ${CMAKE_BINARY_DIR} --out ${CMAKE_BINARY_DIR}/release.json
 )
 
 install(