chlog: add new sections

Author: Borda

src/lightning/fabric/CHANGELOG.md

@@ -6,6 +6,18 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
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+## [2.5.3] - 2025-08-DD
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+### Changed
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+
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+### Fixed
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 ## [2.5.2] - 2025-3-20
 
 ### Changed

src/lightning/pytorch/CHANGELOG.md

@@ -6,6 +6,18 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/).
 
 ---
 
+## [2.5.3] - 2025-08-DD
+
+### Changed
+
+-
+
+
+### Fixed
+
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+
 ## [2.5.2] - 2025-06-20
 
 ### Changed