chore(docker-image): update lscr.io/linuxserver/grocy:4.2.0 docker digest to c7c842c

[bendo-bot]

This PR contains the following updates:

Package	Update	Change
lscr.io/linuxserver/grocy (source)	digest	586618e -> c7c842c

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[github-actions]

Path: cluster/apps/grocy

@@ -97,7 +97,7 @@
       containers:
         - name: server
           imagePullPolicy: IfNotPresent
-          image: lscr.io/linuxserver/grocy:4.2.0@sha256:586618e9049afb408c05f24804e4399a1db296c05cec65cabb539356c9f3ae36
+          image: lscr.io/linuxserver/grocy:4.2.0@sha256:c7c842c5b77b48256e8bb6434cbad7f972ec2b8a304410dee0604a359482577f
           env:
             - name: PUID
               value: "1000"

[bendo-bot]

🦙 MegaLinter status: ✅ SUCCESS

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ ANSIBLE	ansible-lint	yes		no	10.74s
✅ REPOSITORY	git_diff	yes		no	0.05s
✅ REPOSITORY	secretlint	yes		no	1.58s
✅ YAML	prettier	1		0	0.43s
✅ YAML	yamllint	1		0	0.27s

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