ci: do not run accessibility checks for bots (#1319)

## PR Checklist

- [x] Addresses an existing open issue: fixes #1318
- [x] That issue was marked as [`status: accepting
prs`](https://github.com/JoshuaKGoldberg/create-typescript-app/issues?q=is%3Aopen+is%3Aissue+label%3A%22status%3A+accepting+prs%22)
- [x] Steps in
[CONTRIBUTING.md](https://github.com/JoshuaKGoldberg/create-typescript-app/blob/main/.github/CONTRIBUTING.md)
were taken

## Overview

See linked issue. I set this up in my repo in
danvk/gravlax#58 following
typescript-eslint/typescript-eslint#8212. We can
wait for a few renovate bot updates on my repo to confirm that this has
the desired effect.

I added support for top-level `if` statements on jobs. It's possible to
skip an individual step (which is already supported) but skipping the
entire job seems more correct:
https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idif

.github/workflows/accessibility-alt-text-bot.yml

@@ -1,5 +1,6 @@
 jobs:
   accessibility_alt_text_bot:
+    if: ${{ !endsWith(github.actor, '[bot]') }}
     runs-on: ubuntu-latest
     steps:
       - uses: github/accessibility-alt-text-bot@v1.4.0

src/steps/writing/creation/dotGitHub/createWorkflowFile.ts

@@ -49,6 +49,7 @@ interface WorkflowFileStep {
 
 interface WorkflowFileOptionsBase {
 	concurrency?: WorkflowFileConcurrency;
+	if?: string;
 	name: string;
 	on?: WorkflowFileOn;
 	permissions?: WorkflowFilePermissions;
@@ -81,6 +82,7 @@ export function createWorkflowFile({
 			concurrency,
 			jobs: {
 				[name.replaceAll(" ", "_").toLowerCase()]: {
+					...(options.if && { if: options.if }),
 					"runs-on": "ubuntu-latest",
 					steps:
 						"runs" in options

src/steps/writing/creation/dotGitHub/createWorkflows.test.ts

@@ -41,6 +41,7 @@ describe("createWorkflows", () => {
 			{
 			  "accessibility-alt-text-bot.yml": "jobs:
 			  accessibility_alt_text_bot:
+			    if: \${{ !endsWith(github.actor, '[bot]') }}
 			    runs-on: ubuntu-latest
 			    steps:
 			      - uses: github/accessibility-alt-text-bot@v1.4.0
@@ -351,6 +352,7 @@ describe("createWorkflows", () => {
 			{
 			  "accessibility-alt-text-bot.yml": "jobs:
 			  accessibility_alt_text_bot:
+			    if: \${{ !endsWith(github.actor, '[bot]') }}
 			    runs-on: ubuntu-latest
 			    steps:
 			      - uses: github/accessibility-alt-text-bot@v1.4.0

src/steps/writing/creation/dotGitHub/createWorkflows.ts

@@ -90,6 +90,7 @@ export function createWorkflows(options: Options) {
 			}),
 		}),
 		"accessibility-alt-text-bot.yml": createWorkflowFile({
+			if: "${{ !endsWith(github.actor, '[bot]') }}",
 			name: "Accessibility Alt Text Bot",
 			on: {
 				issue_comment: {