Use working Boost versions for CI

Author: Flamefire

.github/workflows/unit-tests.yml

@@ -46,7 +46,7 @@ jobs:
         include:
           - { compiler: gcc-7,    os: ubuntu-20.04, buildType: Release }
           - { compiler: gcc-7,    os: ubuntu-20.04, buildType: Debug, coverage: true }
-          - { compiler: clang,    os: macos-13,     buildType: Debug, boostVersion: 1.74.0 } # Multiple bugs with recent OSX until 1.74
+          - { compiler: clang,    os: macos-13,     buildType: Debug, boostVersion: 1.81.0 } # New libc++ only supported since 1.81
           # Latest GCC
           - { compiler: gcc-13,   os: ubuntu-24.04, buildType: Debug, boostVersion: 1.87.0 }
           # Latest Clang

appveyor.yml

@@ -19,7 +19,7 @@ platform: x64
 
 environment:
   global:
-    BOOST_DIR: 'C:\Libraries\boost_1_77_0'
+    BOOST_DIR: 'C:\Libraries\boost_1_85_0'
     RTTR_DISABLE_ASSERT_BREAKPOINT: 1
 
 install: