Synchronize common files from prometheus/prometheus (#1340)

Propagating changes from prometheus/prometheus default branch.

---------

Signed-off-by: prombot <[email protected]>
Signed-off-by: Gregor Zeitlinger <[email protected]>
Co-authored-by: Gregor Zeitlinger <[email protected]>

Author: prombot

.github/super-linter.env

@@ -1,4 +1,4 @@
-FILTER_REGEX_EXCLUDE=mvnw|src/main/generated/.*|docs/themes/.*|keystore.pkcs12|.*.java|prometheus-metrics-exporter-opentelemetry-shaded/pom.xml
+FILTER_REGEX_EXCLUDE=mvnw|src/main/generated/.*|docs/themes/.*|keystore.pkcs12|.*.java|prometheus-metrics-exporter-opentelemetry-shaded/pom.xml|CODE_OF_CONDUCT.md
 IGNORE_GITIGNORED_FILES=true
 JAVA_FILE_NAME=google_checks.xml
 # disable kubernetes linter - complains about resource limits, etc

CODE_OF_CONDUCT.md

@@ -1,4 +1,3 @@
 # Prometheus Community Code of Conduct
 
-Prometheus follows the
-[CNCF Code of Conduct](https://github.com/cncf/foundation/blob/main/code-of-conduct.md).
+Prometheus follows the [CNCF Code of Conduct](https://github.com/cncf/foundation/blob/main/code-of-conduct.md).