Revert "fix: update Boost paths in client.yml to match installed version 1.87.0"

This reverts commit e19f597.

Author: keelerm84

.github/workflows/client.yml

@@ -58,8 +58,8 @@ jobs:
       - uses: ilammy/msvc-dev-cmd@v1
       - uses: ./.github/actions/ci
         env:
-          BOOST_LIBRARY_DIR: 'C:\local\boost_1_87_0\lib64-msvc-14.3'
-          BOOST_LIBRARYDIR: 'C:\local\boost_1_87_0\lib64-msvc-14.3'
+          BOOST_LIBRARY_DIR: 'C:\local\boost_1_81_0\lib64-msvc-14.3'
+          BOOST_LIBRARYDIR: 'C:\local\boost_1_81_0\lib64-msvc-14.3'
         with:
           cmake_target: launchdarkly-cpp-client
           platform_version: 2022