Add Ledger team update for 2025-01-29 (#534)

Author: lehins

blog/2025-01-29-ledger.md

@@ -0,0 +1,52 @@
+---
+title: Ledger Team Update
+slug: 2025-01-29-ledger
+authors: lehins
+tags: [ledger]
+hide_table_of_contents: false
+---
+
+## High level summary
+
+Some minor improvements to the implementation and the test suite. Nothing really interesting to
+report this time around.
+
+## Low level summary
+
+### Features
+
+* [pull-4841] - Drop dependency on `cardano-prelude`
+* [pull-4844] - Remove `era` type parameter from `MemoBytes`
+* [pull-4837] - Added `NonZero`
+* [pull-4857] - Made predicate failure and environment fields lazy
+
+### Testing
+
+* [pull-4827] - Add method `genSizedList` to class Foldy
+* [pull-4839] - Bumped spec
+* [pull-4853] - Update comments about enabling conformance imp tests
+* [pull-4829] - Enable imp-conformance for ENACT
+* [pull-4838] - Change the structure of the GenT monad, to better track explanations.
+* [pull-4830] - Add randomised certs for imp-tests
+
+### Infrastructure and releasing
+
+* [pull-4845] - Pin Cabal version in Haddocks to GitHub Pages workflow
+* [pull-4843] - Reorder the list of directories in RELEASING.md
+* [pull-4859] - Switch from cryptonite library to crypton
+* [pull-4858] - Changelog for `cardano-node-10.2`
+
+[pull-4827]: https://github.com/IntersectMBO/cardano-ledger/pull/4827
+[pull-4839]: https://github.com/IntersectMBO/cardano-ledger/pull/4839
+[pull-4845]: https://github.com/IntersectMBO/cardano-ledger/pull/4845
+[pull-4841]: https://github.com/IntersectMBO/cardano-ledger/pull/4841
+[pull-4843]: https://github.com/IntersectMBO/cardano-ledger/pull/4843
+[pull-4844]: https://github.com/IntersectMBO/cardano-ledger/pull/4844
+[pull-4853]: https://github.com/IntersectMBO/cardano-ledger/pull/4853
+[pull-4829]: https://github.com/IntersectMBO/cardano-ledger/pull/4829
+[pull-4838]: https://github.com/IntersectMBO/cardano-ledger/pull/4838
+[pull-4837]: https://github.com/IntersectMBO/cardano-ledger/pull/4837
+[pull-4857]: https://github.com/IntersectMBO/cardano-ledger/pull/4857
+[pull-4830]: https://github.com/IntersectMBO/cardano-ledger/pull/4830
+[pull-4859]: https://github.com/IntersectMBO/cardano-ledger/pull/4859
+[pull-4858]: https://github.com/IntersectMBO/cardano-ledger/pull/4858