build(deps): bump slackapi/slack-github-action from 1.25.0 to 2.0.0 #27073

Job	Run time
Code / Compiles	1m 22s
Dependency (Module Info)	1s
Spotless	1s
HAPI Tests (Crypto)	1s
Unit Tests	1s
HAPI Tests (Misc)	1s
HAPI Tests (Node Death Reconnect)	1s
HAPI Tests (Restart)	1s
HAPI Tests (Smart Contract)	1s
HAPI Tests (Token)	1s
JRS Panel	1s
HAPI Tests (Time Consuming)	1s
Hedera Node JRS Panel	1s
Docker Determinism	1s
Gradle Determinism	1s
Snyk Scan	1s
	1m 37s

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