fix: sql-benchmarks.yml YAML syntax (#2398)

Apparently the `${{` is not allowed in the short-hand array syntax. I
switched to the dashed list syntax. I added a yaml lint CI step too.

Author: danking

.github/workflows/bench.yml

@@ -5,7 +5,7 @@ on:
     branches: [ develop ]
 
 permissions:
-  id-token: write # enables AWS-GitHub OIDC
+  id-token: write  # enables AWS-GitHub OIDC
   actions: read
   contents: write
   deployments: write

.github/workflows/ci.yml

@@ -13,14 +13,26 @@ on:
 permissions:
   actions: read
   contents: read
-  checks: write # audit-check creates checks
-  issues: write # audit-check creates issues
+  checks: write  # audit-check creates checks
+  issues: write  # audit-check creates issues
 
 env:
   CARGO_TERM_COLOR: always
   RUST_BACKTRACE: 1
 
 jobs:
+  validate-workflow-yaml:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Validate YAML file
+        run: |
+          # Lint the workflows and yamllint's configuration file.
+          yamllint \
+              -c yamllint-config.yaml \
+              yamllint-config.yaml \
+              .github/workflows
+
   python-lint:
     name: "Python (lint)"
     runs-on: ubuntu-latest
@@ -130,7 +142,7 @@ jobs:
         uses: taiki-e/install-action@cargo-hack
       - name: Rust Build (${{matrix.config.name}})
         run: cargo hack ${{matrix.config.command}} --locked ${{matrix.config.args}} --ignore-private
-  
+
   check-min-deps:
     name: "Check build with minimal dependencies"
     runs-on: ubuntu-latest

.github/workflows/fuzz.yml

@@ -2,7 +2,7 @@ name: Fuzz
 
 on:
   schedule:
-    - cron: '0 0 * * *' # daily
+    - cron: '0 0 * * *'  # daily
   workflow_dispatch:
 
 jobs:

.github/workflows/sql-pr.yml

@@ -26,4 +26,4 @@ jobs:
     needs: label_trigger
     uses: ./.github/workflows/sql-benchmarks.yml
     with:
-      mode: 'pr'
+      mode: 'pr'

yamllint-config.yaml

@@ -0,0 +1,33 @@
+---
+
+yaml-files:
+  - '*.yaml'
+  - '*.yml'
+  - '.yamllint'
+
+rules:
+  anchors: enable
+  braces: disable
+  brackets: disable
+  colons: enable
+  commas: enable
+  comments:
+    level: warning
+  comments-indentation:
+    level: warning
+  document-end: disable
+  document-start: disable
+  empty-lines: enable
+  empty-values: disable
+  float-values: disable
+  hyphens: enable
+  indentation: enable
+  key-duplicates: enable
+  key-ordering: disable
+  line-length: disable
+  new-line-at-end-of-file: enable
+  new-lines: enable
+  octal-values: disable
+  quoted-strings: disable
+  trailing-spaces: enable
+  truthy: disable