chore(deps): update mvdan/shfmt docker tag to v3.12.0

Author: renovate[bot]

Makefile

@@ -22,7 +22,7 @@ check-conventional-commits-linting:
 	docker run $(DOCKER_RUN_WRITE_OPTS) ghcr.io/developerc286/conventional_commits_linter:$(CONVENTIONAL_COMMITS_LINTER_VERSION) --allow-angular-type-only $(FROM)
 
 # renovate: depName=mvdan/shfmt
-SHFMT_VERSION=v3.11.0-alpine@sha256:394d755b6007056a2e6d7537ccdbdcfca01b9855ba91e99df0166ca039c9d422
+SHFMT_VERSION=v3.12.0-alpine@sha256:204a4d2d876123342ad394bd9a28fb91e165abc03868790d4b39cfa73233f150
 
 .PHONY: check-shell-formatting
 check-shell-formatting: