Add PRdoc

Signed-off-by: Alexandru Vasile <[email protected]>

prdoc/pr_5609.prdoc

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+title: Update litep2p network backend to v0.7.0 
+
+doc:
+  - audience: [ Node Dev, Node Operator ]
+    description: |
+      This PR updates the Litep2p network backend to version 0.7.0.
+      This new release introduces several new features, improvements, and fixes to the litep2p library.
+      Key updates include enhanced error handling propagated through metrics, configurable connection limits,
+      and a new API for managing public addresses.
+
+      The Identify protocol no longer includes public addresses in its configuration.
+      Instead, we rely on the `litep2p.public_addresses` interface to propagate external addresses of the node.
+
+crates: 
+  - name: sc-network
+    bump: minor