Allow /deploy to work in MSYS2 runtime PRs in MSYS2-packages

I taught the `open-pr` GitHub workflow to open such PRs in
git-for-windows/git-for-windows-automation#87,
and now it is time to make `/deploy` work in such PRs.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

Author: dscho

GitForWindowsHelper/component-updates.js

@@ -2,6 +2,7 @@ const guessComponentUpdateDetails = (title, body) => {
     let [ , package_name, version ] =
         title.match(/^\[New (\S+) version\] (?:[^0-9]+\s+)?(\S+(?:\s+patch\s+\d+)?)(?! new items)/) ||
         title.match(/^(\S+): update to v?(\d[0-9.]\S*)/) ||
+        title.match(/^(msys2-runtime): update to ([0-9a-f]{40,64})/) ||
         body.match(/^# \[New (\S+) version\] (?:[^0-9]+\s+)?(\S+(?:\s+patch\s+\d+)?)/) ||
         []
     if (!package_name || !version) throw new Error(`Could not guess component-update details from title '${title}'`)

__tests__/index.test.js

@@ -139,6 +139,9 @@ let mockGitHubApiRequest = jest.fn((_context, _token, method, requestPath, paylo
     if (method === 'GET' && requestPath.endsWith('/pulls/69')) return {
         head: { sha: '59d71150a6ee93ab954221c43ca86f8eafe68ddc'}
     }
+    if (method === 'GET' && requestPath.endsWith('/pulls/177')) return {
+        head: { sha: '03bdffe5997'}
+    }
     if (method === 'PATCH' && requestPath.endsWith('/git/refs/heads/main')) {
         if (payload.sha !== 'c0ffee1ab7e') throw new Error(`Unexpected sha: ${payload.sha}`)
         if (payload.force !== false) throw new Error(`Unexpected force value: ${payload.force}`)
@@ -545,6 +548,29 @@ The workflow run [was started](dispatched-workflow-build-and-deploy.yml).`)
     expect(dispatchedWorkflows.map(e => e.payload.inputs.architecture)).toEqual(['x86_64'])
 })
 
+testIssueComment('/deploy', {
+    issue: {
+        number: 177,
+        title: 'msys2-runtime: update to 4b3a2e08f545432b62461313082193d6df09b6b8',
+        body: 'This corresponds to https://github.com/git-for-windows/msys2-runtime/pull/70',
+        pull_request: {
+            html_url: 'https://github.com/git-for-windows/MSYS2-packages/pull/177'
+        }
+    },
+    repository: {
+        name: 'MSYS2-packages'
+    }
+}, async (context) => {
+    expect(await index(context, context.req)).toBeUndefined()
+    expect(context.res.body).toEqual(`I edited the comment: appended-comment-body-existing comment body
+
+The workflow run [was started](dispatched-workflow-build-and-deploy.yml).`)
+    expect(mockQueueCheckRun).toHaveBeenCalledTimes(1)
+    expect(mockUpdateCheckRun).toHaveBeenCalledTimes(1)
+    expect(dispatchedWorkflows.map(e => e.payload.inputs.architecture)).toEqual(['x86_64'])
+    expect(dispatchedWorkflows.map(e => e.payload.inputs.package)).toEqual(['msys2-runtime'])
+})
+
 testIssueComment('/deploy msys2-runtime-3.3', {
     issue: {
         number: 96,