Update dependabot.yml

We no longer support Java 8, so we can update google-java-format.

Author: veithen

.github/dependabot.yml

@@ -19,10 +19,6 @@ updates:
     schedule:
       interval: "daily"
     ignore:
-      # 1.7 is the last version to support Java 8.
-      - dependency-name: "com.google.googlejavaformat:google-java-format"
-        versions:
-        - ">= 1.8"
       - dependency-name: "com.sun.activation:jakarta.activation"
         versions:
         - ">= 1.2.2"