Update protovalidate to v0.8.2 (#216)

Conformance is still passing, so no changes needed.

Author: jchadwick-buf

Makefile

@@ -16,7 +16,7 @@ ADD_LICENSE_HEADER := $(BIN)/license-header \
 		--license-type apache \
 		--copyright-holder "Buf Technologies, Inc." \
 		--year-range "2023"
-PROTOVALIDATE_VERSION ?= v0.8.1
+PROTOVALIDATE_VERSION ?= v0.8.2
 
 .PHONY: help
 help: ## Describe useful make targets