Do not upgrade hystrix dependency

metrics are better with Netflix/Hystrix#1568 introduced in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018. <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.

.github/dependabot.yml

@@ -12,6 +12,10 @@ updates:
     target-branch: "1.9.x"
     milestone: 136
     ignore:
+      # metrics are better with https://github.com/Netflix/Hystrix/pull/1568 introduced
+      # in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018.
+      # <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.
+      - dependency-name: "com.netflix.hystrix:hystrix-core"
       # only upgrade patch versions
       - dependency-name: "*"
         update-types:
@@ -25,6 +29,10 @@ updates:
     target-branch: "1.10.x"
     milestone: 159
     ignore:
+      # metrics are better with https://github.com/Netflix/Hystrix/pull/1568 introduced
+      # in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018.
+      # <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.
+      - dependency-name: "com.netflix.hystrix:hystrix-core"
       # only upgrade patch versions
       - dependency-name: "*"
         update-types:
@@ -38,6 +46,10 @@ updates:
     target-branch: "1.11.x"
     milestone: 206
     ignore:
+      # metrics are better with https://github.com/Netflix/Hystrix/pull/1568 introduced
+      # in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018.
+      # <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.
+      - dependency-name: "com.netflix.hystrix:hystrix-core"
       # only upgrade patch versions
       - dependency-name: "*"
         update-types:
@@ -51,6 +63,10 @@ updates:
     target-branch: "1.12.x"
     milestone: 211
     ignore:
+      # metrics are better with https://github.com/Netflix/Hystrix/pull/1568 introduced
+      # in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018.
+      # <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.
+      - dependency-name: "com.netflix.hystrix:hystrix-core"
       # only upgrade patch versions
       - dependency-name: "*"
         update-types:
@@ -64,6 +80,10 @@ updates:
     target-branch: "main"
     milestone: 185
     ignore:
+      # metrics are better with https://github.com/Netflix/Hystrix/pull/1568 introduced
+      # in hystrix 1.5.12, but Netflix re-released 1.5.11 as 1.5.18 late in 2018.
+      # <=1.5.11 or 1.5.18 doesn't break with Micrometer, but open metrics won't be correct necessarily.
+      - dependency-name: "com.netflix.hystrix:hystrix-core"
       # upgrade minor and patch versions on main
       - dependency-name: "*"
         update-types: