Increase experimental to 20% for fuchsia-compile-x64-dbg

Bug: 1001643
Change-Id: I46058d98b3f83810033c8074f2f9ad9965b2be71
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1861105Reviewed-by: Aaron Gable <agable@chromium.org>
Commit-Queue: Haiyang Pan <hypan@google.com>
Cr-Commit-Position: refs/heads/master@{#706982}

infra/config/buckets/try/cq.star

@@ -349,7 +349,7 @@ luci.cq_group(
         ),
         luci.cq_tryjob_verifier(
             builder = 'try/fuchsia-compile-x64-dbg',
-            experiment_percentage = 5,
+            experiment_percentage = 20,
         ),
         # https://crbug.com/739556; make this non-experimental ASAP.
         luci.cq_tryjob_verifier(

infra/config/generated/commit-queue.cfg

@@ -185,7 +185,7 @@ config_groups: <
       >
       builders: <
         name: "chromium/try/fuchsia-compile-x64-dbg"
-        experiment_percentage: 5
+        experiment_percentage: 20
       >
       builders: <
         name: "chromium/try/fuchsia-x64-cast"

infra/config/generated/cq-builders.md

@@ -331,7 +331,7 @@ as required builders.
   * Experiment percentage: 5
 
 * [fuchsia-compile-x64-dbg](https://ci.chromium.org/p/chromium/builders/try/fuchsia-compile-x64-dbg) ([definition](https://cs.chromium.org/search?q=package:%5Echromium$+file:/cq.star$+-file:/beta/+-file:/stable/+fuchsia-compile-x64-dbg)) ([matching builders](https://cs.chromium.org/search?q=+file:trybots.py+fuchsia-compile-x64-dbg))
-  * Experiment percentage: 5
+  * Experiment percentage: 20
 
 * [ios-device](https://ci.chromium.org/p/chromium/builders/try/ios-device) ([definition](https://cs.chromium.org/search?q=package:%5Echromium$+file:/cq.star$+-file:/beta/+-file:/stable/+ios-device)) ([matching builders](https://cs.chromium.org/search?q=+file:trybots.py+ios-device))
   * Experiment percentage: 10