Revert "Disable caching"

This reverts commit fc616b5.

Author: Gold856

.github/workflows/build-windows.yml

@@ -28,7 +28,7 @@ jobs:
       GTSAM_BUILD_UNSTABLE: ${{ matrix.build_unstable }}
       BOOST_VERSION: 1.72.0
       BOOST_EXE: boost_1_72_0-msvc-14.2
-      SCCACHE_GHA_ENABLED: OFF
+      SCCACHE_GHA_ENABLED: ON
 
     strategy:
       fail-fast: true

.github/workflows/vcpkg.yml

@@ -16,7 +16,7 @@ jobs:
     name: ${{ matrix.os }}
     runs-on: ${{ matrix.os }}
     env:
-      SCCACHE_GHA_ENABLED: 0
+      SCCACHE_GHA_ENABLED: 1
       # Some files take so long to compile that the sccache daemon times out,
       # which is bad for stats tracking. Always keep sccache daemon alive.
       SCCACHE_IDLE_TIMEOUT: 0