fix: update to terraform-plugin-sdk v2.34.0

[spikecurtis]

Speculative fix in relation to https://github.com/coder/coder/issues/14726

There have been several issues fixed in the plugin-sdk and its dependencies about go routines and the RPC protocol. Since our coder plugin is itself very, very simple in design (it generally just reads data from environment variables for data sources, and just does validation on resources), it's hard to imagine a hang in our provider schema code (not impossible tho). The error reports we've seen all show the Coder provider as the one that is involved in text file busy, so it seems likely that it's something unique about the coder/coder provider.

hashicorp/kubernetes is used by both customers who reported the text file busy error, and it is on SDK version 2.29+ and we were back on 2.20 before this PR.

[spikecurtis]

• #290 👈
• main

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Merge activity

• Sep 24, 7:56 AM EDT: @spikecurtis started a stack merge that includes this pull request via Graphite.
• Sep 24, 7:56 AM EDT: @spikecurtis merged this pull request with Graphite.

[matifali]

@spikecurtis we can patch the 1.0 after cherry picking this change into release/1.0 branch.