chore: prepare 1.2.7 release

[matiwinnetou]

No description provided.

[Copilot]

Copilot reviewed 68 out of 71 changed files in this pull request and generated no comments.

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Comments suppressed due to low confidence (1)

api/src/main/java/org/cardanofoundation/rosetta/common/util/CborEncodeUtil.java:33

• The previous filtering using getTxExtraData has been removed and all operations are being encoded; verify that this change in behavior is intended to avoid including operations that should be filtered out.

operations.forEach(operation -> operationArray.add(OperationToCborMap.convertToCborMap(operation)));

[matiwinnetou]

Recommended manual QA:

• a full flow test for 1.2.7 e.g. on preprod or main-net Rosetta
• scalability test on test machine with 8 Cores, NVMe + 48 GB RAM on mid_level profile now that we have there Undertow and virtual threads. SLA: numbers must not be worse than Tomcat and 1.2.6

CC: @Kartiiyer12 @linconvidal

[sonarqubecloud]

Quality Gate failed

Failed conditions
0.0% Coverage on New Code (required ≥ 80%)

See analysis details on SonarQube Cloud