Fix typo in GitHub workflows: "cahce" -> "cache"

Author: jarkkoka

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           java-package: jdk
           architecture: x64
           distribution: temurin
-          cahce: maven
+          cache: maven
 
       - name: Run tests
         run: mvn clean verify -Pall-tests

.github/workflows/ktlint.yml

@@ -19,7 +19,7 @@ jobs:
           java-package: jdk
           architecture: x64
           distribution: temurin
-          cahce: maven
+          cache: maven
 
       - name: Run ktlint Check
         run: mvn ktlint:check