Update scala-library to 2.12.18 (#372)

Co-authored-by: Darren Gibson <zarthross@users.noreply.github.com>

.github/workflows/ci.yml

@@ -29,11 +29,11 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest]
-        scala: [2.12.17, 2.13.11, 3.3.0]
+        scala: [2.12.18, 2.13.11, 3.3.0]
         java: [temurin@11, temurin@17]
         project: [rootJVM]
         exclude:
-          - scala: 2.12.17
+          - scala: 2.12.18
             java: temurin@17
           - scala: 3.3.0
             java: temurin@17
@@ -184,12 +184,12 @@ jobs:
             ~/Library/Caches/Coursier/v1
           key: ${{ runner.os }}-sbt-cache-v2-${{ hashFiles('**/*.sbt') }}-${{ hashFiles('project/build.properties') }}
 
-      - name: Download target directories (2.12.17, rootJVM)
+      - name: Download target directories (2.12.18, rootJVM)
         uses: actions/download-artifact@v3
         with:
-          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.17-rootJVM
+          name: target-${{ matrix.os }}-${{ matrix.java }}-2.12.18-rootJVM
 
-      - name: Inflate target directories (2.12.17, rootJVM)
+      - name: Inflate target directories (2.12.18, rootJVM)
         run: |
           tar xf targets.tar
           rm targets.tar

build.sbt

@@ -15,7 +15,7 @@ val Versions = new {
   val snakeYamlEngine = "2.6"
   val previousCirceYamls = Set("0.14.0", "0.14.1", "0.14.2")
 
-  val scala212 = "2.12.17"
+  val scala212 = "2.12.18"
   val scala213 = "2.13.11"
   val scala3 = "3.3.0"