deps: update mvdan.cc/sh to commit 8b67386

Update mvdan.cc/sh to commit 8b67386. This allows execution of action
scripts to correctly support parentheses in `test` / `[` commands.

Required to support NVIDIA's NGC container `.singularity.d` scripts
without error.

Fixes sylabs#2286

CHANGELOG.md

@@ -11,6 +11,11 @@
   `exec`, `shell`, and `instance start` can now also be passed a `--authfile
   <path>` option, to read OCI registry credentials from this custom file.
 
+### Bug Fixes
+
+- Support parentheses in `test` / `[` commands in container startup scripts,
+  via dependency update of mvdan.cc/sh.
+
 ## 4.0.1 \[2023-10-13\]
 
 ### New Features & Functionality

go.mod

@@ -56,7 +56,7 @@ require (
 	golang.org/x/text v0.13.0
 	gopkg.in/yaml.v3 v3.0.1
 	gotest.tools/v3 v3.5.1
-	mvdan.cc/sh/v3 v3.7.0
+	mvdan.cc/sh/v3 v3.7.1-0.20231014181306-8b673862efc6
 )
 
 require (

go.sum

@@ -789,5 +789,7 @@ honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWh
 honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
 mvdan.cc/sh/v3 v3.7.0 h1:lSTjdP/1xsddtaKfGg7Myu7DnlHItd3/M2tomOcNNBg=
 mvdan.cc/sh/v3 v3.7.0/go.mod h1:K2gwkaesF/D7av7Kxl0HbF5kGOd2ArupNTX3X44+8l8=
+mvdan.cc/sh/v3 v3.7.1-0.20231014181306-8b673862efc6 h1:X0JtrTYSV9TYmOIoNhB/mMYkg1YxwRl9iwFNMhI+En0=
+mvdan.cc/sh/v3 v3.7.1-0.20231014181306-8b673862efc6/go.mod h1:5hco898titbMf+9Y1bnuzVQAHgb/EpGCSN390uVmAVU=
 sigs.k8s.io/yaml v1.3.0 h1:a2VclLzOGrwOHDiV8EfBGhvjHvP46CtW5j6POvhYGGo=
 sigs.k8s.io/yaml v1.3.0/go.mod h1:GeOyir5tyXNByN85N/dRIT9es5UQNerPYEKK56eTBm8=