Update scala-library to 2.12.16

Author: typelevel-steward[bot]

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.15]
+        scala: [2.12.16]
         java: [temurin@8]
         project: [rootJVM]
     runs-on: ${{ matrix.os }}
@@ -110,7 +110,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.15]
+        scala: [2.12.16]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:
@@ -176,7 +176,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.15]
+        scala: [2.12.16]
         java: [temurin@8]
     runs-on: ${{ matrix.os }}
     steps:

build.sbt

@@ -3,7 +3,7 @@ name := "sbt-typelevel"
 ThisBuild / tlBaseVersion := "0.4"
 ThisBuild / tlCiReleaseBranches := Seq("series/0.4")
 ThisBuild / tlSitePublishBranch := Some("series/0.4")
-ThisBuild / crossScalaVersions := Seq("2.12.15")
+ThisBuild / crossScalaVersions := Seq("2.12.16")
 ThisBuild / developers := List(
   tlGitHubDev("armanbilge", "Arman Bilge"),
   tlGitHubDev("rossabaker", "Ross A. Baker"),