dep: Upgrade k9s v0.25.18 from to v0.25.21.

Author: liqiang-fit2cloud

Dockerfile

@@ -23,7 +23,7 @@ RUN ARCH=$(uname -m) && case $ARCH in aarch64) ARCH="arm64";; x86_64) ARCH="amd6
     git clone --branch master --depth 1 https://github.com/ahmetb/kubectl-aliases /opt/kubectl-aliases && chmod -R 755 /opt/kubectl-aliases && \
     git clone --branch 0.30.0 --depth 1 https://github.com/junegunn/fzf /opt/fzf && chmod -R 755 /opt/fzf && /opt/fzf/install && ln -s /opt/fzf/bin/fzf /usr/local/bin/fzf && \
     ARCH=$(uname -m) && case $ARCH in aarch64) ARCH="arm64";; x86_64) ARCH="x86_64";; esac && echo "ARCH: " $ARCH && \
-    cd /tmp/ && wget https://github.com/derailed/k9s/releases/download/v0.25.18/k9s_Linux_${ARCH}.tar.gz && tar -xvf k9s_Linux_${ARCH}.tar.gz && chmod +x k9s && mv k9s /usr/bin && \
+    cd /tmp/ && wget https://github.com/derailed/k9s/releases/download/v0.25.21/k9s_Linux_${ARCH}.tar.gz && tar -xvf k9s_Linux_${ARCH}.tar.gz && chmod +x k9s && mv k9s /usr/bin && \
     KUBECTX_VERSION=v0.9.4 && wget https://github.com/ahmetb/kubectx/releases/download/${KUBECTX_VERSION}/kubens_${KUBECTX_VERSION}_linux_${ARCH}.tar.gz && tar -xvf kubens_${KUBECTX_VERSION}_linux_${ARCH}.tar.gz && chmod +x kubens && mv kubens /usr/bin && \
     wget https://github.com/ahmetb/kubectx/releases/download/${KUBECTX_VERSION}/kubectx_${KUBECTX_VERSION}_linux_${ARCH}.tar.gz && tar -xvf kubectx_${KUBECTX_VERSION}_linux_${ARCH}.tar.gz && chmod +x kubectx && mv kubectx /usr/bin && \
     curl -L https://raw.githubusercontent.com/helm/helm/master/scripts/get-helm-3 | bash && \