CI: consolidate 'pnpm/action-setup' version and it's usage (#50261)

In this PR we spin off usage of recently introduced packageManager-property across CI workflows and consolidate the version of pnpm/action-setup action we are using.

.github/actions/setup-woocommerce-monorepo/action.yml

@@ -22,14 +22,14 @@ inputs:
 runs:
     using: 'composite'
     steps:
-        - name: 'Read PNPM Version'
-          id: 'read-pnpm-version'
-          shell: 'bash'
-          run: 'echo "version=$(./.github/actions/setup-woocommerce-monorepo/scripts/read-pnpm-version.sh package.json)" >> $GITHUB_OUTPUT'
         - name: 'Setup PNPM'
           uses: 'pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d'
-          with:
+        # Next step is rudimentary - fixes a know composite action bug during post-actions:
-              version: ${{ steps.read-pnpm-version.outputs.version }}
+        # Error: Index was out of range. Must be non-negative and less than the size of the collection.
+        - name: 'Read PNPM version'
+          id: 'read-pnpm-version'
+          shell: 'bash'
+          run: 'echo "version=$(pnpm --version)" >> $GITHUB_OUTPUT'
         - name: 'Setup Node'
           uses: 'actions/setup-node@8f152de45cc393bb48ce5d89d36b731f54556e65'
           with:

.github/actions/setup-woocommerce-monorepo/scripts/read-pnpm-version.sh

@@ -1,9 +0,0 @@
-#!/usr/bin/env bash
-
-PACKAGE_FILE=$1
-if [[ -z "$PACKAGE_FILE" ]]; then
-    echo "Usage: $0 <package.json>"
-    exit 1
-fi
-
-awk -F'"' '/"pnpm": ".+"/{ print $4; exit; }' $PACKAGE_FILE

.github/workflows/pr-lint-markdown.yml

@@ -38,7 +38,7 @@ jobs:
                   docs/docs-manifest.json
 
             - name: Setup PNPM
-              uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
+              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d
 
             - name: Setup Node
               uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c

.github/workflows/release-code-freeze.yml

@@ -31,7 +31,6 @@ jobs:
             issues: write
             pull-requests: write
         outputs:
-            pnpmVersion: ${{ steps.read-pnpm-version.outputs.version }}
             isTodayAcceleratedFreeze: ${{ steps.get-versions.outputs.isTodayAcceleratedFreeze }}
             isTodayMonthlyFreeze: ${{ steps.get-versions.outputs.isTodayMonthlyFreeze }}
             acceleratedVersion: ${{ steps.get-versions.outputs.acceleratedVersion }}
@@ -47,18 +46,8 @@ jobs:
               with:
                   fetch-depth: 0
 
-            - name: Read PNPM Version
-              id: read-pnpm-version
-              shell: bash
-              run: |
-                version=$(./.github/actions/setup-woocommerce-monorepo/scripts/read-pnpm-version.sh package.json)
-                echo "version=$version" >> $GITHUB_OUTPUT
-                echo "PNPM Version: $version"
-
             - name: Setup PNPM
-              uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
+              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d
-              with:
-                  version: ${{ steps.read-pnpm-version.outputs.version }}
 
             - name: Setup Node
               uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c
@@ -149,9 +138,7 @@ jobs:
                   fetch-depth: 0
 
             - name: Setup PNPM
-              uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
+              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d
-              with:
-                  version: ${{ needs.code-freeze-prep.outputs.pnpmVersion }}
 
             - name: Setup Node
               uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c
@@ -275,9 +262,7 @@ jobs:
                   fetch-depth: 0
 
             - name: Setup PNPM
-              uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
+              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d
-              with:
-                  version: ${{ needs.code-freeze-prep.outputs.pnpmVersion }}
 
             - name: Setup Node
               uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c
@@ -346,9 +331,7 @@ jobs:
                   fetch-depth: 0
 
             - name: Setup PNPM
-              uses: pnpm/action-setup@fe02b34f77f8bc703788d5817da081398fad5dd2
+              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d
-              with:
-                  version: ${{ needs.code-freeze-prep.outputs.pnpmVersion }}
 
             - name: Setup Node
               uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c