Update CHANGELOG and bump output format version

Signed-off-by: Ayan Sinha Mahapatra <ayansmahapatra@gmail.com>

Author: AyanSinhaMahapatra

CHANGELOG.rst

@@ -34,6 +34,20 @@ v33.0.0 (next next, roadmap)
   of these in other summary plugins.
   See https://github.com/nexB/scancode-toolkit/issues/1745
 
+Major API/other changes:
+
+- Output Format Version updated to 4.2.0 (major version bump)
+- Dependency attribute rename: ``is_resolved`` renamed to ``is_pinned``
+  See https://github.com/nexB/scancode-toolkit/pull/3888 for more details.
+
+Changes in Output Data Structure:
+
+- The data structure of the JSON output has changed for
+  dependencies at file level package_data, and at top-level.
+  Note that the change is a modification to the JSON output,
+  so we have a major version bump ``3.2.0`` to ``4.2.0``:
+
+  - Dependency attribute ``is_resolved`` renamed to ``is_pinned``
 
 v32.2.1 - 2024-07-02
 ---------------------

src/scancode_config.py

@@ -141,7 +141,7 @@ def _create_dir(location):
 
 # See https://github.com/nexB/scancode-toolkit/issues/2653 for more information
 # on the data format version
-__output_format_version__ = '3.2.0'
+__output_format_version__ = '4.2.0'
 
 #
 spdx_license_list_version = '3.24'