build(deps): disable clasweb registry for dependabot (#948)

- see #915

Author: c-dilks

.github/dependabot.yml

@@ -1,21 +1,18 @@
 version: 2
 
-registries:
-  clas12maven:
-    type: maven-repository
-    url: https://clasweb.jlab.org/clas12maven
-  jhep:
-    type: maven-repository
-    url: https://clasweb.jlab.org/jhep/maven
+# registries: FIXME: disabled, see <https://github.com/JeffersonLab/coatjava/issues/915>
+#   clas12maven:
+#     type: maven-repository
+#     url: https://clasweb.jlab.org/.clas12maven
+#   jhep:
+#     type: maven-repository
+#     url: https://clasweb.jlab.org/.jhep/maven
 
 updates:
   - package-ecosystem: "maven"
     directory: "/"
     schedule:
       interval: "weekly"
-    registries:
-      - clas12maven
-      - jhep
     ignore:
       - dependency-name: "org.jlab:groot" # since version numbers are not in order
       - dependency-name: "org.ejml:ejml-simple" # keep version the same as `j4ml:j4ml-clas12:jar:0.9-SNAPSHOT`; see pull requests #636 and #632