chore(deps): update docker.io/rust docker tag to v1.79.0

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| docker.io/rust | minor | `1.77` -> `1.78` |

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### Configuration

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Co-authored-by: Renovate Bot <renovate@kemitix.net>
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.woodpecker.yml

@@ -1,5 +1,5 @@
 variables:
-  - &rust_image "docker.io/rust:1.77"
+  - &rust_image "docker.io/rust:1.79.0"
   - &slow_check_paths
     - path:
         # rust source code

renovate.json

@@ -1,6 +1,10 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": [
-    "config:recommended"
+  "extends": ["config:recommended"],
+  "packageRules": [
+    {
+      "matchManagers": ["cargo"],
+      "rangeStrategy": "replace"
+    }
   ]
 }