skipper: update main fleet version to v0.21.139

* build(deps): bump alpine from `77726ef` to `b89d9c9` in /packaging: zalando/skipper#3122
* build(deps): bump docker/build-push-action from 5.4.0 to 6.1.0: zalando/skipper#3124
* build(deps): bump amazonlinux from `0d172f8` to `b0016cb` in /fuzz: zalando/skipper#3125
* Facilitate OPA decision correlation with business flows: zalando/skipper#3041
* config: fix defaultFiltersFlags.String: zalando/skipper#3127
* config: fix defaultFiltersFlags yaml test case: zalando/skipper#3128
* filters/auth: add token validator filter: zalando/skipper#3126
* metrics: register skipper_filter_create_duration_seconds: zalando/skipper#3129
* cmd/skipper: allow exclusion of insecure cipher suites: zalando/skipper#3123
* Revert "Facilitate OPA decision correlation with business flows (#3041)": zalando/skipper#3138
* build(deps): bump docker/build-push-action from 6.1.0 to 6.2.0: zalando/skipper#3134
* dependabot: group GoLang dependencies update: zalando/skipper#3136
* build(deps): bump github.com/open-policy-agent/opa from 0.65.0 to 0.66.0: zalando/skipper#3135
* build(deps): bump amazonlinux from `b0016cb` to `5bf7910` in /fuzz: zalando/skipper#3133
* metrics: refactor prometheus metric registration: zalando/skipper#3132

diff zalando/skipper@v0.21.124...v0.21.139

depends on #7786

cluster/manifests/skipper/deployment.yaml

@@ -1,6 +1,5 @@
-{{ $internal_version := "v0.21.124-947" }}
+{{ $internal_version := "v0.21.139-963"}}
 {{ $canary_internal_version := "v0.21.139-963" }}
-
 {{/* Optional canary arguments separated by "[cf724afc]" to allow whitespaces, e.g. "-foo=has a whitespace[cf724afc]-baz=qux" */}}
 {{ $canary_args := "" }}