Remove the chart build tag containing the release number

The release number causes issues with the OBS publish script as that
would require deleting old releases... which is not permitted.

containers/proxy-helm/proxy-helm.changes.cbosdo

@@ -0,0 +1 @@
+- Remove the build tag with the release number

containers/server-helm/server-helm.changes.cbosdo

@@ -0,0 +1 @@
+- Remove the build tag with the release number

rel-eng/chart_push.sh

@@ -50,7 +50,7 @@ if [ -f "${SRPM_PKG_DIR}/Chart.yaml" ]; then
     # Remove leading zero from Uyuni release and add potentially missing micro part
     SEMANTIC_VERSION=$(echo ${PRODUCT_VERSION} | sed 's/\([0-9]\+\)\.0\?\([1-9][0-9]*\)\(\.\([0-9]\+\)\)\?\( .\+\)\?/\1.\2.\4\5/' | sed 's/\.$/.0/')
     # Also include the semantic version since helm chart wants it for OCI repos (those generated by OBS)
-    sed "/^#\!BuildTag:/ s/$/ ${NAME}:${SEMANTIC_VERSION} ${NAME}:${PRODUCT_VERSION} ${NAME}:${PRODUCT_VERSION}.%RELEASE%/" -i ${SRPM_PKG_DIR}/Chart.yaml
+    sed "/^#\!BuildTag:/ s/$/ ${NAME}:${SEMANTIC_VERSION} ${NAME}:${PRODUCT_VERSION}" -i ${SRPM_PKG_DIR}/Chart.yaml
 
     rm ${SRPM_PKG_DIR}/${PKG_NAME}.spec
 fi