Bump github.com/containers/storage from 1.23.1 to 1.23.2

Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.23.1 to 1.23.2.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.23.1...v1.23.2)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>

vendor/github.com/containers/storage/.cirrus.yml

@@ -106,7 +106,7 @@ lint_task:
     env:
         CIRRUS_WORKING_DIR: "/go/src/github.com/containers/storage"
     container:
-        image: golang:1.13
+        image: golang:1.15
     modules_cache:
         fingerprint_script: cat go.sum
         folder: $GOPATH/pkg/mod
@@ -142,7 +142,7 @@ meta_task:
 
 vendor_task:
     container:
-        image: golang:1.14
+        image: golang:1.15
     modules_cache:
         fingerprint_script: cat go.sum
         folder: $GOPATH/pkg/mod
@@ -157,6 +157,6 @@ success_task:
         - meta
         - vendor
     container:
-        image: golang:1.14
+        image: golang:1.15
     clone_script: 'mkdir -p "$CIRRUS_WORKING_DIR"'  # Source code not needed
     script: /bin/true

vendor/github.com/containers/storage/VERSION

@@ -1 +1 @@
-1.23.1
+1.23.2

vendor/github.com/containers/storage/drivers/counter.go

@@ -51,6 +51,10 @@ func (c *RefCounter) incdec(path string, infoOp func(minfo *minfo)) int {
 		if c.checker.IsMounted(path) {
 			m.count++
 		}
+	} else if !c.checker.IsMounted(path) {
+		// if the unmount was performed outside of this process (e.g. conmon cleanup)
+		//the ref counter would lose track of it.  Check if it is still mounted.
+		m.count = 0
 	}
 	infoOp(m)
 	count := m.count

vendor/github.com/containers/storage/go.mod

@@ -1,3 +1,5 @@
+go 1.15
+
 module github.com/containers/storage
 
 require (
@@ -25,5 +27,3 @@ require (
 	golang.org/x/sys v0.0.0-20200327173247-9dae0f8f5775
 	gotest.tools v2.2.0+incompatible
 )
-
-go 1.13