Update sbt-typelevel-ci-release, ... to 0.4.21 (#143)

* Update sbt-typelevel-ci-release, ... to 0.4.21

* Regenerate GitHub Actions workflow

Executed command: sbt githubWorkflowGenerate

---------

Co-authored-by: typelevel-steward[bot] <106827141+typelevel-steward[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -114,7 +114,6 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [3.2.2]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -193,14 +192,13 @@ jobs:
           (echo "$PGP_PASSPHRASE"; echo; echo) | gpg --command-fd 0 --pinentry-mode loopback --change-passphrase $(gpg --list-secret-keys --with-colons 2> /dev/null | grep '^sec:' | cut --delimiter ':' --fields 5 | tail -n 1)
 
       - name: Publish
-        run: sbt '++ ${{ matrix.scala }}' tlCiRelease
+        run: sbt tlCiRelease
 
   site:
     name: Generate Site
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [3.2.2]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -238,7 +236,7 @@ jobs:
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
       - name: Generate site
-        run: sbt '++ ${{ matrix.scala }}' docs/tlSite
+        run: sbt docs/tlSite
 
       - name: Publish site
         if: github.event_name != 'pull_request' && github.ref == 'refs/heads/main'

project/plugins.sbt

@@ -1,6 +1,6 @@
-addSbtPlugin("org.typelevel" % "sbt-typelevel-ci-release" % "0.4.20")
-addSbtPlugin("org.typelevel" % "sbt-typelevel-mergify" % "0.4.20")
-addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.4.20")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-ci-release" % "0.4.21")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-mergify" % "0.4.21")
+addSbtPlugin("org.typelevel" % "sbt-typelevel-site" % "0.4.21")
 addSbtPlugin("org.scala-js" % "sbt-scalajs" % "1.13.1")
 addSbtPlugin("org.scala-native" % "sbt-scala-native" % "0.4.12")
 addSbtPlugin("org.portable-scala" % "sbt-scalajs-crossproject" % "1.3.1")