Update common Prometheus files

Signed-off-by: prombot <prometheus-team@googlegroups.com>

.circleci/config.yml

@@ -1,7 +1,7 @@
 ---
 version: 2.1
 orbs:
-  prometheus: prometheus/prometheus@0.11.0
+  prometheus: prometheus/prometheus@0.15.0
   go: circleci/go@1.7.0
 jobs:
   test_frontend:

.yamllint

@@ -14,4 +14,14 @@ rules:
   document-start: disable
   indentation:
     spaces: consistent
+  key-duplicates:
+    ignore: |
+      config/testdata/section_key_dup.bad.yml
   line-length: disable
+  truthy:
+    ignore: |
+      .github/workflows/codeql-analysis.yml
+      .github/workflows/funcbench.yml
+      .github/workflows/fuzzing.yml
+      .github/workflows/prombench.yml
+      .github/workflows/golangci-lint.yml

Makefile.common

@@ -78,7 +78,7 @@ ifneq ($(shell which gotestsum),)
 endif
 endif
 
-PROMU_VERSION ?= 0.12.0
+PROMU_VERSION ?= 0.13.0
 PROMU_URL     := https://github.com/prometheus/promu/releases/download/v$(PROMU_VERSION)/promu-$(PROMU_VERSION).$(GO_BUILD_PLATFORM).tar.gz
 
 GOLANGCI_LINT :=