Force fmt to build static libs.

Otherwise it shows up in our export set when a parent project enables
BUILD_SHARED_LIBS

cmake/NVBenchDependencies.cmake

@@ -5,6 +5,9 @@ rapids_cpm_find(fmt 7.1.3
     GITHUB_REPOSITORY fmtlib/fmt
     GIT_TAG 7.1.3
     GIT_SHALLOW TRUE
+    OPTIONS
+      # Force static to keep fmt internal.
+      "BUILD_SHARED_LIBS OFF"
 )
 
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