Help: Add notes for topic 'FindBISON-report-file'

Help/release/dev/FindBISON-report-file.rst

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+FindBISON-report-file
+---------------------
+
+* The :module:`FindBISON` module ``BISON_TARGET`` macro learned a new
+  ``REPORT_FILE`` option to specify the bison ``--report-file=`` option.