Remove deprecated APIs and unused variables

[Copilot]

Eliminates compilation and CI warnings from obsolete Entity Framework methods, unused exception variables, and deprecated GitHub Actions commands.

Changes

C# Code

• Removed obsolete TranslateParameterizedCollectionsToConstants() calls in MySQL context configuration (EformWorkflowPlugin.cs)
• Changed unused exception variable to discard pattern: catch (Exception ex) → catch (Exception)
• Replaced deprecated HtmlConverter.ParseHtml() with ParseBody() (WordProcessor.cs)

GitHub Actions

• Migrated set-output commands to $GITHUB_OUTPUT environment files in both workflow files

- run: echo ::set-output name=VERSION::$(git describe --abbrev=0 --tags)
+ run: echo "VERSION=$(git describe --abbrev=0 --tags)" >> $GITHUB_OUTPUT

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Get rid of warnings in codebase</issue_title>
<issue_description>```
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L441
The variable 'ex' is declared but never used
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L163
'RelationalDbContextOptionsBuilder<MySqlDbContextOptionsBuilder, MySqlOptionsExtension>.TranslateParameterizedCollectionsToConstants()' is obsolete: 'Use UseParameterizedCollectionMode instead.'
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L152
'RelationalDbContextOptionsBuilder<MySqlDbContextOptionsBuilder, MySqlOptionsExtension>.TranslateParameterizedCollectionsToConstants()' is obsolete: 'Use UseParameterizedCollectionMode instead.'
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/Helpers/WordProcessor.cs#L62
'HtmlConverter.ParseHtml(string, CancellationToken)' is obsolete: 'Use ParseBody instead for output clarification'
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L441
The variable 'ex' is declared but never used
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L163
'RelationalDbContextOptionsBuilder<MySqlDbContextOptionsBuilder, MySqlOptionsExtension>.TranslateParameterizedCollectionsToConstants()' is obsolete: 'Use UseParameterizedCollectionMode instead.'
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/EformWorkflowPlugin.cs#L152
'RelationalDbContextOptionsBuilder<MySqlDbContextOptionsBuilder, MySqlOptionsExtension>.TranslateParameterizedCollectionsToConstants()' is obsolete: 'Use UseParameterizedCollectionMode instead.'
workflow-dotnet-test: eFormAPI/Plugins/Workflow.Pn/Workflow.Pn/Helpers/WordProcessor.cs#L62
'HtmlConverter.ParseHtml(string, CancellationToken)' is obsolete: 'Use ParseBody instead for output clarification'
workflow-build
The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
workflow-build
The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/
workflow-build
The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

## Comments on the Issue (you are @copilot in this section)

<comments>
</comments>

• Fixes Get rid of warnings in codebase #1195

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