cmake: Set minimum CEF version to 95

We know that our minimum supported CEF version is 95, and we know that
OBS (or obs-browser) will fail to build against anything older. Specify
the minimum version required in CMake so this becomes a configure
failure instead of a build failure.

CMakeLists.txt

@@ -11,7 +11,7 @@ if(NOT ENABLE_BROWSER)
  return()
 endif()
 
-find_package(CEF REQUIRED)
+find_package(CEF REQUIRED 95)
 find_package(nlohmann_json REQUIRED)
 
 add_library(obs-browser MODULE)

cmake/legacy.cmake

@@ -25,7 +25,7 @@ option(ENABLE_BROWSER_QT_LOOP "Enable running CEF on the main UI thread alongsid
 
 mark_as_advanced(ENABLE_BROWSER_LEGACY ENABLE_BROWSER_SHARED_TEXTURE ENABLE_BROWSER_PANELS ENABLE_BROWSER_QT_LOOP)
 
-find_package(CEF REQUIRED)
+find_package(CEF REQUIRED 95)
 
 if(NOT TARGET CEF::Wrapper)
  message(