Update required libosmium version

Author: joto

CMakeLists.txt

@@ -170,7 +170,7 @@ endif()
 
 include_directories(${CMAKE_CURRENT_SOURCE_DIR}/src ${CMAKE_CURRENT_BINARY_DIR})
 
-find_package(Osmium 2.15.4 REQUIRED COMPONENTS io)
+find_package(Osmium 2.15.6 REQUIRED COMPONENTS io)
 include_directories(SYSTEM ${OSMIUM_INCLUDE_DIRS} ${PROTOZERO_INCLUDE_DIR} ${FMT_INCLUDE_DIR})
 
 if (WITH_LUA)

README.md

@@ -203,10 +203,10 @@ Use `osm2pgsql --version` to verify that the build includes LuaJIT support:
 
 ```sh
 ./osm2pgsql --version
-osm2pgsql version 0.96.0 (64 bit id space)
+osm2pgsql version 1.2.0
 
 Compiled using the following library versions:
-Libosmium 2.15.0
+Libosmium 2.15.6
 Lua 5.1.4 (LuaJIT 2.1.0-beta3)
 ```