Bump github.com/containers/image/v5 from 5.18.0 to 5.19.0

Bumps [github.com/containers/image/v5](https://github.com/containers/image) from 5.18.0 to 5.19.0.
- [Release notes](https://github.com/containers/image/releases)
- [Commits](https://github.com/containers/image/compare/v5.18.0...v5.19.0)

---
updated-dependencies:
- dependency-name: github.com/containers/image/v5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

1 files changed, 18 insertions, 0 deletions

diff --git a/vendor/github.com/proglottis/gpgme/unset_agent_info.go b/vendor/github.com/proglottis/gpgme/unset_agent_info.go
new file mode 100644
index 000000000..986aca59f
--- /dev/null
+++ b/vendor/github.com/proglottis/gpgme/unset_agent_info.go
@@ -0,0 +1,18 @@
+// +build !windows
+
+package gpgme
+
+// #include <stdlib.h>
+import "C"
+import (
+	"unsafe"
+)
+
+// This is somewhat of a horrible hack. We need to unset GPG_AGENT_INFO so that gpgme does not pass --use-agent to GPG.
+// os.Unsetenv should be enough, but that only calls the underlying C library (which gpgme uses) if cgo is involved
+// - and cgo can't be used in tests. So, provide this helper for test initialization.
+func unsetenvGPGAgentInfo() {
+	v := C.CString("GPG_AGENT_INFO")
+	defer C.free(unsafe.Pointer(v))
+	C.unsetenv(v)
+}