Change meson to only require boost 1.79

CI only has 1.79 present currently, and can't upgrade to 1.80 until some
sdbusplus issues (which i'm looking at) are sorted out.

Temporarily only require 1.79 to unblock CI.

Tested: CI only

Signed-off-by: Ed Tanous <edtanous@google.com>
Change-Id: Ib81c1c9a6fb23f62a39fca6ce64edff75ceb050c
diff --git a/meson.build b/meson.build
index f1019da..c293e00 100644
--- a/meson.build
+++ b/meson.build
@@ -285,7 +285,7 @@
 endif
 bmcweb_dependencies += nlohmann_json
 
-boost = dependency('boost',version : '>=1.80.0', required : false, include_type: 'system')
+boost = dependency('boost',version : '>=1.79.0', required : false, include_type: 'system')
 if not boost.found()
   subproject('boost', required: false)
   boost_inc = include_directories('subprojects/boost_1_80_0/', is_system:true)