yamllint fixes (#73)

Author: PeterAdams-A

.github/workflows/pull_request.yml

@@ -2,7 +2,7 @@ name: PR
 
 on:
     pull_request:
-      types: [opened, reopened, synchronize]
+        types: [opened, reopened, synchronize]
 
 jobs:
     soundness:

docker/docker-compose.2204.60.yaml

@@ -25,4 +25,3 @@ services:
     image: swift-asn1:22.04-6.0
     environment:
       - SWIFT_VERSION=6.0
-

docker/docker-compose.2204.main.yaml

@@ -20,7 +20,7 @@ services:
 
   shell:
     image: swift-asn1:22.04-main
-    
+
   update-benchmark-baseline:
     image: swift-asn1:22.04-main
     environment:

docker/docker-compose.yaml

@@ -36,4 +36,3 @@ services:
   shell:
     <<: *common
     entrypoint: /bin/bash
-