.changes/1.15.1.md
BUG FIXES:
Fixed crash when configuration has an invalid action_trigger nested block in data or ephemeral lifecycle blocks (#38402)
validate: Removed validation of attributes inside backend blocks due to incompatibility with workflows using the -backend-config flag. (#38466)
Fix non-const variable checks on init (#38470)
Avoid warnings in 'terraform output -raw' (#38487)
Ignore undeclared variable values from the cloud backend (#38490)
Fix panic for types modules with no expanded instances (#38491)
Fixed "unknown provider function" errors occurring during init (#38472)
init: Fixed a bug that impacted use of provider pre-releases during init (#38496)