chore: update dependencies (including circle -> gha) (#47)

Test run:
https://github.com/dequelabs/dbjorge-test-repo/actions/runs/9604481533/job/26490058201

Notes on the updates:
- I blew away the whole lockfile and updated everything listed in
package.json to latest
- ...except eslint, which I left at major version 8 for compat with
typescript-eslint's current stable version
- ...and except a few dev deps that I dropped because we weren't using
them anyway (eslint+tslint stuff, sinon)
- The octokit update bumps octokit to a version that uses native fetch,
which nock can't mock, so I added a test seam that forces octokit to use
node-fetch when `NODE_ENV === 'test'`. The alternatives would be to use
a beta version of nock (didn't want to use a beta version of anything in
a repo we update so rarely) or to use a different mocking library
(`fetch-mock` was the best-looking option but it required more test
changes than I wanted to spend time on to swap it out)

I included a conversion from circle to GHA because I hit errors when
naively updating the circle config to node 20 and it was faster to
convert than to debug circle. None of the failed checks are relevant
anymore; once this merges we can disable circle in this repo and update
the branch policies to refer to GHA.

## Reviewer checks

**Required fields, to be filled out by PR reviewer(s)**

- [ ] Follows the commit message policy, appropriate for next version
- [ ] Code is reviewed for security

.github/workflows/tag-major-release.yml

@@ -9,8 +9,10 @@ jobs:
   update_tag:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
       - run: |
           git config user.name github-actions
           git config user.email github-actions@github.com

.github/workflows/tests.yml

@@ -0,0 +1,40 @@
+name: Tests
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm run build
+
+  lint:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm run lint
+
+  test:
+    runs-on: ubuntu-latest
+    timeout-minutes: 5
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+      - run: npm ci
+      - run: npm run test

Dockerfile

@@ -1,8 +1,8 @@
-FROM node:12-alpine
+FROM node:20-alpine
 
 WORKDIR /app
 COPY . /app
 
-RUN npm install
+RUN npm ci
 RUN npm run build
 ENTRYPOINT ["node", "/app/lib/main.js"]