release 1.17.0-snapshot.20210910.7786.0.976ca400 (#10838)

Manual release process. @stefanobaghino-da is in charge of this release.

Commit log (since 1.17.0-snapshot.20210907.7759.0.35a853fd):
```
976ca400eb Force JSON API to refresh packages for GET requests to /v1/query (#10835)
e42cd3a1c6 LF: add interface to scala AST and decoder (#10830)
07b72d0f3e Update Ledger API's proto documentation [KVL-1094] (#10815)
648acf52f8 Fix typo in app-arch.rst (#10798)
dc9fbb5aa9 Stringify errors in create-daml-app before calling alert (#10831)
90b008ef0d Stop using `controller … can` syntax in ledger tests (#10814)
e490b69471 Clarifications of code ownership in /ledger and /ledger-api (#10742)
8cdeb7539a make auth middleware aware that actAs => readAs (#10825)
e263d43aca Ledger API test tool: test that record time is monotonically increasing [KVL-1053] (#10552)
e5793a317b Account for multi participant conformance tests when updating the config [KVL-1092] (#10788)
2e39d7b647 Deprecate `Commands.deduplication_time` field [KVL-1096] (#10802)
7824201b8d Get rid of extra new line and prune precision for all gatling values (#10820)
a03f52a15e Add ledger API tests about command deduplication information in completions [KVL-1057] (#10748)
61a07b1986 Add command line option max-deduplication-duration for sandbox and KV [KVL-1098] (#10816)
0800504955 Fix DuplicateSubmissionID test exclusions (#10819)
1ff34ffbe8 Remove workaround for akka supervisor issue (#10818)
6d347d4e88 Add daml interfaces to the Haskell LF AST (#10811)
cecb27fe16 Stop using controller can syntax in skeleton template (#10799)
8830eaa2ec Drop controller can syntax from compiler tests (#10807)
9038a8051b Update code documentation for `participant-state` API [KVL-1094] (#10812)
60ffb79fb1 Command deduplication - Participant side/committer side command deduplication conformance tests split [KVL-1093] (#10784)
1e6540f8f2 Stop using `controller _ can` syntax in daml-lf tests (#10805)
0db15e6759 Ledger API test tool: ensure that test identifiers are unique (#10804)
f1e378a60b rotate release duty after 1.17.0-snapshot.20210907.7759.0.35a853fd (#10809)
1464177bf8 release 1.17.0-snapshot.20210907.7759.0.35a853fd (#10808)
deb8a8b740 [Divulgence pruning] Daml SDK docs update [DPP-536] (#10764)
8405ad58fd Enhance InMemoryLedger to use the ValueEnricher (#10757)
```

Changelog (since 1.17.0-snapshot.20210907.7759.0.35a853fd):
```
- [JSON API] Fixed a bug that prevented the JSON API to be aware of
  packages uploaded directly via the Ledger API.
- The auth middleware will now consider that actAs credentials are valid
  for readAs requests.
- [Ledger API Specification] Introduced a new conformance test about recort time in completions being monotonically increasing
ledger-api-test-tool - CommandDeduplicationIT tests only participant side deduplication, it should be disabled for KV ledgers. Added KVCommandDeduplicationIT which should be run for KV ledgers
- [Ledger API Specification] `Commands.deduplication_time` field has been deprecated, please use `Commands.deduplication_duration` instead.
ledger-api-test-tool - CommandDeduplicationIT tests only participant side deduplication, it should be disabled for KV ledgers. Added KVCommandDeduplicationIT which should be run for KV ledgers
[Ledger API Specification] Participant pruning of all divulged contracts is fully implemented: Participant operators can choose to prune all immediately and retroactively divulged contracts, by setting the newly-added prune_all_divulged_contracts flag in the ParticipantPruningService/Prune request.
```

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changelog_end

LATEST

@@ -1,4 +1,4 @@
-35a853fd30bd394b64c8a390c7e3c14c3ad40a62 1.17.0-snapshot.20210907.7759.0.35a853fd
+976ca400eb038a1bdf66c7ab6412455a03c3e64d 1.17.0-snapshot.20210910.7786.0.976ca400
 48050ad7836b9825c9dc7bd96fbc980b8eb9b6e5 1.16.0
 aca22721f709d879a49fa958a1eb0b532fcbde54 1.15.0
 aa2978400dd88a6011db18a62fb71c23ebd9d20b 1.14.2