fix: add missing max-retries input to csharp-publish

Add missing max-retries input declaration that was being used by the
step-security/retry step at line 171 but not defined in the inputs
section.

Changes:
- Add max-retries input with default value of '3'
- Add description for dependency restoration retry attempts
- Regenerate README.md with updated inputs documentation

This fixes undefined input reference in the Restore Dependencies step.

csharp-publish/README.md

@@ -8,11 +8,12 @@ Publishes a C# project to GitHub Packages.
 
 ### Inputs
 
-| name             | description                                        | required | default     |
-|------------------|----------------------------------------------------|----------|-------------|
-| `dotnet-version` | <p>Version of .NET SDK to use.</p>                 | `false`  | `""`        |
-| `namespace`      | <p>GitHub namespace for the package.</p>           | `true`   | `ivuorinen` |
-| `token`          | <p>GitHub token with package write permissions</p> | `false`  | `""`        |
+| name             | description                                                        | required | default     |
+|------------------|--------------------------------------------------------------------|----------|-------------|
+| `dotnet-version` | <p>Version of .NET SDK to use.</p>                                 | `false`  | `""`        |
+| `namespace`      | <p>GitHub namespace for the package.</p>                           | `true`   | `ivuorinen` |
+| `token`          | <p>GitHub token with package write permissions</p>                 | `false`  | `""`        |
+| `max-retries`    | <p>Maximum number of retry attempts for dependency restoration</p> | `false`  | `3`         |
 
 ### Outputs
 
@@ -48,4 +49,10 @@ This action is a `composite` action.
     #
     # Required: false
     # Default: ""
+
+    max-retries:
+    # Maximum number of retry attempts for dependency restoration
+    #
+    # Required: false
+    # Default: 3
 ```

csharp-publish/action.yml

@@ -22,6 +22,10 @@ inputs:
   token:
     description: 'GitHub token with package write permissions'
     required: false
+  max-retries:
+    description: 'Maximum number of retry attempts for dependency restoration'
+    required: false
+    default: '3'
 
 outputs:
   publish_status:

csharp-publish/rules.yml

@@ -2,7 +2,7 @@
 # Validation rules for csharp-publish action
 # Generated by update-validators.py v1.0.0 - DO NOT EDIT MANUALLY
 # Schema version: 1.0
-# Coverage: 100% (3/3 inputs)
+# Coverage: 100% (4/4 inputs)
 #
 # This file defines validation rules for the csharp-publish GitHub Action.
 # Rules are automatically applied by validate-inputs action when this
@@ -17,15 +17,17 @@ required_inputs:
   - namespace
 optional_inputs:
   - dotnet-version
+  - max-retries
   - token
 conventions:
   dotnet-version: dotnet_version
+  max-retries: numeric_range_1_10
   namespace: namespace_with_lookahead
   token: github_token
 overrides: {}
 statistics:
-  total_inputs: 3
-  validated_inputs: 3
+  total_inputs: 4
+  validated_inputs: 4
   skipped_inputs: 0
   coverage_percentage: 100
 validation_coverage: 100