Upgrade version of bundled terraform binary

[jdomeracki-coder]

Upgrade version of bundled terraform binary

Version 1.14.0 was released on November 19th which uses Go 1.25
https://github.com/hashicorp/terraform/blob/70a2bb44574bb2f9502b688df8eb8a600611be8e/go.mod#L3

We should upgrade the version installed in our base image:
https://github.com/coder/coder/blob/d5bb1361e2af6d4dd4bb62360debeea7591cef2c/scripts/Dockerfile.base#L3

[jdomeracki-coder]

Verified experimentally that 95% of the Go stdlib CVEs are fixed in the version used by terraform release 1.14.1 ie. 1.25.4