fix: disable running CI for releases

There are a few parts to this:

1) First, disable running on pushes. This is because pushes don't have
context when they come from a pull request. In particular, pushes
don't have the branch name the pull request came from.

2) Then, disable running if the branch name starts with release.

3) In the same condition check, enable runs only for branches that are
closed via a merge. We don't want to trigger CI for a PR that is
closed because we decided to abandon the idea.

.github/workflows/ci-workflow.yml

@@ -1,9 +1,21 @@
 name: Node Agent CI
 
-on: [push, pull_request, workflow_dispatch]
+on:
+  workflow_dispatch: {}
+  pull_request:
+    types:
+      # Created PR
+      - opened
+      # Added commits to the PR
+      - synchronize
+      # Sometimes we need to do this to trigger a run
+      - reopened
+      # Merged the PR (check below ensures non-merge closing events don't trigger)
+      - closed
 
 jobs:
   lint:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     runs-on: ubuntu-latest
 
     strategy:
@@ -24,6 +36,7 @@ jobs:
       run: npm run lint:lockfile
 
   ci:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     runs-on: ubuntu-latest
 
     strategy:
@@ -42,6 +55,7 @@ jobs:
       run: npm run unit:scripts
 
   unit:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     runs-on: ubuntu-latest
 
     strategy:
@@ -72,6 +86,7 @@ jobs:
         path: ./coverage/esm-unit/lcov.info
 
   integration:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     runs-on: ubuntu-latest
 
     strategy:
@@ -97,6 +112,7 @@ jobs:
         path: ./coverage/integration/lcov.info
 
   versioned:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     runs-on: ubuntu-latest
 
     strategy:
@@ -117,14 +133,14 @@ jobs:
       if: ${{ matrix.node-version == '14.x' }}
       run: TEST_CHILD_TIMEOUT=600000 npm run versioned:npm6
       env:
-        VERSIONED_MODE: ${{ github.ref == 'refs/heads/main' && '--minor' || '--major' }}
+        VERSIONED_MODE: ${{ github.event.pull_request.merged == true && '--minor' || '--major' }}
         JOBS: 4 # 2 per CPU seems to be the sweet spot in GHA (July 2022)
         C8_REPORTER: lcovonly
     - name: Run Versioned Tests (npm v7 / Node 16+)
       if: ${{ matrix.node-version != '14.x' }}
       run: TEST_CHILD_TIMEOUT=600000 npm run versioned:npm7
       env:
-        VERSIONED_MODE: ${{ github.ref == 'refs/heads/main' && '--minor' || '--major' }}
+        VERSIONED_MODE: ${{ github.event.pull_request.merged == true && '--minor' || '--major' }}
         JOBS: 4 # 2 per CPU seems to be the sweet spot in GHA (July 2022)
         C8_REPORTER: lcovonly
     - name: Archive Versioned Test Coverage
@@ -134,6 +150,7 @@ jobs:
         path: ./coverage/versioned/lcov.info
 
   codecov:
+    if: ${{ !startsWith(github.head_ref, 'release/v') && (github.event.pull_request.merged == true || github.event.action != 'closed') }}
     needs: [unit, integration, versioned]
     runs-on: ubuntu-latest