chore: drop anything older than 2.13.10

Author: ckipp01

Diff for: bin/test-release.sh

@@ -4,22 +4,11 @@ set -eux
 version=$1
 
 coursier fetch \
-  org.scoverage:scalac-scoverage-plugin_2.12.10:$version \
-  org.scoverage:scalac-scoverage-plugin_2.12.11:$version \
-  org.scoverage:scalac-scoverage-plugin_2.12.12:$version \
-  org.scoverage:scalac-scoverage-plugin_2.12.13:$version \
-  org.scoverage:scalac-scoverage-plugin_2.12.14:$version \
   org.scoverage:scalac-scoverage-plugin_2.12.15:$version \
   org.scoverage:scalac-scoverage-plugin_2.12.16:$version \
   org.scoverage:scalac-scoverage-plugin_2.12.17:$version \
   org.scoverage:scalac-scoverage-plugin_2.12.18:$version \
   org.scoverage:scalac-scoverage-plugin_2.12.19:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.5:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.5:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.6:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.7:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.8:$version \
-  org.scoverage:scalac-scoverage-plugin_2.13.9:$version \
   org.scoverage:scalac-scoverage-plugin_2.13.10:$version \
   org.scoverage:scalac-scoverage-plugin_2.13.11:$version \
   org.scoverage:scalac-scoverage-plugin_2.13.12:$version \

Diff for: build.sbt

@@ -18,12 +18,7 @@ lazy val bin213 =
     defaultScala213,
     "2.13.12",
     "2.13.11",
-    "2.13.10",
-    "2.13.9",
-    "2.13.8",
-    "2.13.7",
-    "2.13.6",
-    "2.13.5"
+    "2.13.10"
   )
 
 inThisBuild(