Update changelogs

Author: nfrisby

ouroboros-consensus-cardano/changelog.d/20240711_064942_nick.frisby_consolidate_txlimits.md

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+<!--
+A new scriv changelog fragment.
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+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+### Patch
+
+- Updates for the `TxLimits` mempool consolidation.
+
+### Non-Breaking
+
+- Do not check transaction sizes in the forging functions; simply include all
+  given transactions.
+
+- Remove the hotfix Babbage mempool checks.
+
+<!--
+### Breaking
+
+- A bullet item for the Breaking category.
+
+-->

ouroboros-consensus-diffusion/changelog.d/20240711_064938_nick.frisby_consolidate_txlimits.md

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+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+
+### Patch
+
+- Updates for the `TxLimits` mempool consolidation.
+
+<!--
+### Non-Breaking
+
+- A bullet item for the Non-Breaking category.
+
+-->
+<!--
+### Breaking
+
+- A bullet item for the Breaking category.
+
+-->

ouroboros-consensus/changelog.d/20240711_064934_nick.frisby_consolidate_txlimits.md

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+<!--
+A new scriv changelog fragment.
+
+Uncomment the section that is right (remove the HTML comment wrapper).
+-->
+
+<!--
+### Patch
+
+- A bullet item for the Patch category.
+
+-->
+<!--
+### Non-Breaking
+
+- A bullet item for the Non-Breaking category.
+
+-->
+
+### Breaking
+
+- Consolidate `TxLimits` in the mempool.
+     - Remove `Mempool.`getTxSize`; the snapshot interface contains byte sizes
+       now.
+
+     - Transaction size, block capacity, and mempool capacity are
+       multi-dimensional vectors (`ExUnits`, etc), instead of merely bytes:
+       `TxMeasure`.
+
+     - A transaction cannot be added if it would push any component of the size
+       over that component of the mempool capacity.
+
+     - The mempool capacity override is still specified in terms of bytes, but
+       the magnitude is interpreted via division as a block count, rounded up.
+
+- Pass a correctly-sized prefix of the mempool to the forging functions,
+  instead of its entire contents. The mempool's finger tree is best way to find
+  that cutoff.