[FR] Normalize yml ext to yaml (#3675)

Removed changes from:
- detection_rules/etc/packages.yml

(selectively cherry picked from commit 79f575b33c)

.github/workflows/get-target-branches.yml

@@ -30,4 +30,4 @@ jobs:
       - id: get-branch-list
         run: |
           python -m detection_rules dev utils get-branches
-          echo "::set-output name=matrix::$(cat ./detection_rules/etc/target-branches.yml)"
+          echo "::set-output name=matrix::$(cat ./detection_rules/etc/target-branches.yaml)"

.github/workflows/manual-backport.yml

@@ -9,7 +9,7 @@ on:
           description: 'Sha256 hash of the merge commit to use in backporting'
           required: true
         exceptions:
-          description: 'Comma seperated list of files to skip staging e.g. detection_rules/etc/packages.yml,detection_rules/attack.py)'
+          description: 'Comma seperated list of files to skip staging e.g. detection_rules/etc/packages.yaml,detection_rules/attack.py)'
           required: false
 
 jobs:
@@ -60,7 +60,7 @@ jobs:
         env:
           UNSTAGED_LIST_FILE: "../unstaged-rules.txt"
         run: |
-          VERSION=$(cat detection_rules/etc/packages.yml | grep -oP "(?<=name:\s')[\d\.]+[-\w\.]*(?=')")
+          VERSION=$(cat detection_rules/etc/packages.yaml | grep -oP "(?<=name:\s')[\d\.]+[-\w\.]*(?=')")
           python -m detection_rules dev unstage-incompatible-rules --target-stack-version "$VERSION" --exception-list "${{github.event.inputs.exceptions}}"
 
           # Track which rules were unstaged

.github/workflows/release-fleet.yml

@@ -100,7 +100,7 @@ jobs:
           if: github.event.inputs.package_maturity == 'ga'
           run: |
             cd detection-rules
-            output=$(cat detection_rules/etc/packages.yml | grep -oP '(?<=\sversion: )\S+')
+            output=$(cat detection_rules/etc/packages.yaml | grep -oP '(?<=\sversion: )\S+')
             echo "pkg_version=$output" >> $GITHUB_ENV
 
         - name: Create release tag