Bump Traefik to v2.3.0-rc7

[ldez]

Hello,

This PR updates Traefik to v2.3.0-rc7.

/cc @mmatur @SantoDE @jbdoumenjou

Cheers

[SantoDE]

Lgtm

[github-actions]

Diff for c56f446:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index 69a26b5..50d5a76 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -26,16 +26,16 @@ GitCommit: d99fdc97173b0ba01c7da11c70598ac66a51f2db
 Directory: windows/1809
 Constraints: windowsservercore-1809
 
-Tags: v2.3.0-rc6, 2.3.0-rc6, v2.3, 2.3, picodon
+Tags: v2.3.0-rc7, 2.3.0-rc7, v2.3, 2.3, picodon
 Architectures: amd64, arm32v6, arm64v8
 GitRepo: https://github.com/traefik/traefik-library-image.git
-GitCommit: 9d823fd7bcc724b09bd9945803f28fc4ae98627f
+GitCommit: f26172e964d241b20aec31561a159886d8a9b681
 Directory: alpine
 
-Tags: v2.3.0-rc6-windowsservercore-1809, 2.3.0-rc6-windowsservercore-1809, v2.3-windowsservercore-1809, 2.3-windowsservercore-1809, picodon-windowsservercore-1809
+Tags: v2.3.0-rc7-windowsservercore-1809, 2.3.0-rc6-windowsservercore-1809, v2.3-windowsservercore-1809, 2.3-windowsservercore-1809, picodon-windowsservercore-1809
 Architectures: windows-amd64
 GitRepo: https://github.com/traefik/traefik-library-image.git
-GitCommit: 9d823fd7bcc724b09bd9945803f28fc4ae98627f
+GitCommit: f26172e964d241b20aec31561a159886d8a9b681
 Directory: windows/1809
 Constraints: windowsservercore-1809
 
diff --git a/_bashbrew-list b/_bashbrew-list
index 45608f8..a070594 100644
--- a/_bashbrew-list
+++ b/_bashbrew-list
@@ -10,8 +10,8 @@ traefik:2.2.11
 traefik:2.2.11-windowsservercore-1809
 traefik:2.3
 traefik:2.3-windowsservercore-1809
-traefik:2.3.0-rc6
 traefik:2.3.0-rc6-windowsservercore-1809
+traefik:2.3.0-rc7
 traefik:chevrotin
 traefik:chevrotin-windowsservercore-1809
 traefik:latest
@@ -32,6 +32,6 @@ traefik:v2.2.11
 traefik:v2.2.11-windowsservercore-1809
 traefik:v2.3
 traefik:v2.3-windowsservercore-1809
-traefik:v2.3.0-rc6
-traefik:v2.3.0-rc6-windowsservercore-1809
+traefik:v2.3.0-rc7
+traefik:v2.3.0-rc7-windowsservercore-1809
 traefik:windowsservercore-1809
diff --git a/traefik_picodon-windowsservercore-1809/Dockerfile b/traefik_picodon-windowsservercore-1809/Dockerfile
index 0a4ba91..89b85fd 100644
--- a/traefik_picodon-windowsservercore-1809/Dockerfile
+++ b/traefik_picodon-windowsservercore-1809/Dockerfile
@@ -2,7 +2,7 @@ FROM mcr.microsoft.com/windows/servercore:1809
 SHELL ["powershell", "-Command", "$ErrorActionPreference = 'Stop'; $ProgressPreference = 'SilentlyContinue';"]
 
 RUN Invoke-WebRequest \
-        -Uri "https://github.com/traefik/traefik/releases/download/v2.3.0-rc6/traefik_v2.3.0-rc6_windows_amd64.zip" \
+        -Uri "https://github.com/traefik/traefik/releases/download/v2.3.0-rc7/traefik_v2.3.0-rc7_windows_amd64.zip" \
         -OutFile "/traefik.zip"; \
     Expand-Archive -Path "/traefik.zip" -DestinationPath "/" -Force; \
     Remove-Item "/traefik.zip" -Force
@@ -15,5 +15,5 @@ LABEL org.opencontainers.image.vendor="Traefik Labs" \
     org.opencontainers.image.url="https://traefik.io" \
     org.opencontainers.image.title="Traefik" \
     org.opencontainers.image.description="A modern reverse-proxy" \
-    org.opencontainers.image.version="v2.3.0-rc6" \
+    org.opencontainers.image.version="v2.3.0-rc7" \
     org.opencontainers.image.documentation="https://docs.traefik.io"
diff --git a/traefik_picodon/Dockerfile b/traefik_picodon/Dockerfile
index 716915e..a48e327 100644
--- a/traefik_picodon/Dockerfile
+++ b/traefik_picodon/Dockerfile
@@ -8,7 +8,7 @@ RUN set -ex; \
 		x86_64) arch='amd64' ;; \
 		*) echo >&2 "error: unsupported architecture: $apkArch"; exit 1 ;; \
 	esac; \
-	wget --quiet -O /tmp/traefik.tar.gz "https://github.com/traefik/traefik/releases/download/v2.3.0-rc6/traefik_v2.3.0-rc6_linux_$arch.tar.gz"; \
+	wget --quiet -O /tmp/traefik.tar.gz "https://github.com/traefik/traefik/releases/download/v2.3.0-rc7/traefik_v2.3.0-rc7_linux_$arch.tar.gz"; \
 	tar xzvf /tmp/traefik.tar.gz -C /usr/local/bin traefik; \
 	rm -f /tmp/traefik.tar.gz; \
 	chmod +x /usr/local/bin/traefik
@@ -22,5 +22,5 @@ LABEL org.opencontainers.image.vendor="Traefik Labs" \
 	org.opencontainers.image.url="https://traefik.io" \
 	org.opencontainers.image.title="Traefik" \
 	org.opencontainers.image.description="A modern reverse-proxy" \
-	org.opencontainers.image.version="v2.3.0-rc6" \
+	org.opencontainers.image.version="v2.3.0-rc7" \
 	org.opencontainers.image.documentation="https://docs.traefik.io"