Update dependency shfmt to v3.12.0

renovate[bot] · web-flow · commit a96f3c6b0666 · 2025-07-06T23:14:03.000Z
diff --git a/.tool-versions b/.tool-versions
@@ -1,3 +1,3 @@
 golang     1.24.1
-shfmt      3.8.0
+shfmt      3.12.0
 shellcheck 0.10.0
