chore: directly set ruby version rather than use an env

Author: dazuma

.github/workflows/release-hook-on-closed.yml

@@ -14,14 +14,12 @@ jobs:
       contents: write # required for creating releases
       pull-requests: write # required for updating label on PR, posting comments
       issues: write # required for creating new issues on failed releases
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.github/workflows/release-hook-on-push.yml

@@ -14,14 +14,12 @@ jobs:
     permissions:
       contents: write # required for pushing changes
       pull-requests: write # required for updating open release PRs
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.github/workflows/release-perform.yml

@@ -24,14 +24,12 @@ jobs:
       contents: write # required for creating releases
       pull-requests: write # required for updating label on PR, posting comments
       issues: write # required for creating new issues on failed releases
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.github/workflows/release-request-weekly.yml

@@ -13,14 +13,12 @@ jobs:
     permissions:
       contents: write # required for pushing changes
       pull-requests: write # required for creating release PRs
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.github/workflows/release-request.yml

@@ -17,14 +17,12 @@ jobs:
     permissions:
       contents: write # required for pushing changes
       pull-requests: write # required for creating release PRs
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.github/workflows/release-retry.yml

@@ -21,14 +21,12 @@ jobs:
       contents: write # required for creating releases
       pull-requests: write # required for updating label on PR, posting comments
       issues: write # required for creating new issues on failed releases
-    env:
-      ruby_version: "4.0"
     runs-on: ubuntu-latest
     steps:
-      - name: Install Ruby ${{ env.ruby_version }}
+      - name: Install Ruby
         uses: ruby/setup-ruby@b90be12699fdfcbee4440c2bba85f6f460446bb0 # v1.279.0
         with:
-          ruby-version: ${{ env.ruby_version }}
+          ruby-version: "4.0"
       - name: Checkout repo
         uses: actions/checkout@v6
       - name: Install Toys

.toys/.data/releases.yml

@@ -1,24 +1,33 @@
-# This file controls the release system.
+# This file controls the toys-release gem.
 
 # The repo organization and name.
 repo: open-telemetry/opentelemetry-ruby
+
 # Time in seconds for release scripts to wait for CI to complete.
 required_checks_timeout: 1200
+
 # Git user attached to commits for release pull requests.
 git_user_name: otelbot
 git_user_email: 197425009+otelbot@users.noreply.github.com
 
 # List of all releaseable gems. Each gem should include:
 #  *  name: The name of the gem. (Required.)
-#  *  directory: Gem directory relative to the repo root. (Required.)
+#  *  directory: Gem directory relative to the repo root.
+#     (Required unless the gem name matches the directory name exactly. This
+#     means it's always required in this repo because all the gem names include
+#     the word "opentelemetry" whereas the directory names do not.)
 #  *  version_rb_path: Path to version.rb relative to the gem directory.
 #     (Required only if it does not match the gem name. e.g. The gem
-#     "opentelemetry-sdk" would default to lib/opentelemetry/sdk/version.rb)
+#     "opentelemetry-sdk" would default to "lib/opentelemetry/sdk/version.rb",
+#     so this field is required only if the actual path is different.)
 #  *  version_constant: The fully-qualified version constant as an array.
-#     (Required because the OpenTelemetry namespace does not match the gem
-#     name "opentelemetry".)
+#     (Required if the actual constant name, including its capitalization,
+#     differs from what would be inferred from the gem name. This means it's
+#     always required in this repo, because the capitalization of the
+#     "OpenTelemetry" namespace does not match the gem name "opentelemetry".)
 #  *  changelog_path: Path to CHANGLEOG.md relative to the gem directory.
-#     (Required only if it is not in the expected location.)
+#     (Required only if it is not in the expected location, which is the file
+#     "CHANGELOG.md" at the root of the gem directory.)
 gems:
   - name: opentelemetry-api
     directory: api