Merge pull request #4 from infralovers/tfc-agent-1.15.4

fix: update tfc agent

Dockerfile

@@ -1,5 +1,5 @@
 ARG OP_VERSION=2.29.0
-ARG VERSION=1.15.3
+ARG VERSION=1.15.4
 FROM 1password/op:${OP_VERSION} as op 
 
 FROM hashicorp/tfc-agent:${VERSION}