Downgrade to Boost 1.72.0 to fix Boost_Tests crash in develop_approva…

…ltests_fetch_content with gcc (#1)

develop_approvaltests_fetch_content/CMakeLists.txt

@@ -20,8 +20,12 @@ include(FetchContent)
 
 # Oldest Boost in dl.bintray.com is 1.63.0
 # Tested with versions in range: 1.63.0 ... 1.74.0
+# NOTE: With gcc, and Boost 1.73.0, 1.74.0 and 1.75.0, tests in the following directory
+#       exit with error code 200:
+#           ApprovalTests.cpp.CMakeSamples/ApprovalTests.cpp/tests/Boost_Tests/
+#       See https://github.com/claremacrae/ApprovalTests.cpp.CMakeSamples/issues/1
 set(BoostVersion
-        "1.74.0")
+        "1.72.0")
 
 ## Tested with versions in range: v2.3.0 ... v2.13.3
 ## Does not work with devel, and v3 releases