chore(integration-tests): bump CTF framework to v0.15.16 (#436)

Pulls in smartcontractkit/chainlink-testing-framework#2519 — the
Sui/Aptos CTF provider cwd tar-race fix. The Aptos provider in
chainlink-deployments-framework builds blockchain.Input with no
ContractsDir, causing upstream newAptos to filepath.Abs("") = cwd
and tar-stream the live test working directory. Growing log files
trip archive/tar: write too long intermittently.

Module bump only — no source changes.

Author: Fletch153

integration-tests/go.mod

@@ -16,7 +16,7 @@ require (
 	github.com/smartcontractkit/chainlink-aptos v0.0.0-20260324144720-484863604698
 	github.com/smartcontractkit/chainlink-common v0.11.2-0.20260406055916-9aa6b6c0ae81
 	github.com/smartcontractkit/chainlink-deployments-framework v0.94.0
-	github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.13
+	github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.16
 	github.com/smartcontractkit/chainlink/core/scripts v0.0.0-20260407130455-5258160d170f
 	github.com/smartcontractkit/mcms v0.39.0
 	github.com/spf13/cobra v1.10.2

integration-tests/go.sum

@@ -1464,8 +1464,8 @@ github.com/smartcontractkit/chainlink-sui v0.0.0-20260403160819-db38ee3fbcde h1:
 github.com/smartcontractkit/chainlink-sui v0.0.0-20260403160819-db38ee3fbcde/go.mod h1:U3XStbEnbx/+L22n1/8aOIdgcGVxtsZB7p59xJGngAs=
 github.com/smartcontractkit/chainlink-sui/deployment v0.0.0-20260304150206-c64e48eb0cb0 h1:5NdsaclAfx+p8lZUZ3WIqMW3M9Cze1ZVPENOQhha1pk=
 github.com/smartcontractkit/chainlink-sui/deployment v0.0.0-20260304150206-c64e48eb0cb0/go.mod h1:IfeW6t5Yc5293H5ixuooAft+wYBMSFQWKjbBTwYiKr4=
-github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.13 h1:quHuZ/2I7XZ8pdRw5UAwKW/idsPchHN7KnQ69YWzxS4=
-github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.13/go.mod h1:BALK9cj8sk12e15UF6uDhifHgIApa+6N11TcQfInEro=
+github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.16 h1:pzrAgF6QFMQLS/kukXenLN87PCa48SEMlE7QvJxTOHs=
+github.com/smartcontractkit/chainlink-testing-framework/framework v0.15.16/go.mod h1:BALK9cj8sk12e15UF6uDhifHgIApa+6N11TcQfInEro=
 github.com/smartcontractkit/chainlink-testing-framework/lib v1.54.5 h1:jARz/SWbmWoGJJGVcAnWwGMb8JuHRTQQsM3m6ZwrAGk=
 github.com/smartcontractkit/chainlink-testing-framework/lib v1.54.5/go.mod h1:dgwtcefGr+0i+C2S6V/Xgntzm7E5CPxXMyi2OnQvnHI=
 github.com/smartcontractkit/chainlink-testing-framework/parrot v0.6.2 h1:cWUHB6QETyKbmh0B988f5AKIKb3aBDWugfrZ04jAUUY=