[chore] correctly escape . characters during release preparation (ope…

…n-telemetry#10631)

#### Description
This PR fixes an issue where the `.` character in a version string (e.g.
`1.2.3`) was interpreted by `sed` as any character and therefore needed
to be properly escaped. This happened during the prepare-release
workflow.
The version string for the current stable and current beta version
strings provided at pipeline start is replaced as follows:
```
1.2.3 -> 1[.]2[.]3
```

This ensures that `sed` searches for the literal `.` character instead
of interpreting it as a wildcard character.
I specifically used the `[]` syntax to avoid the hassle of "how many
backslashes do i need until it's properly escaped?". (and that for bash
and sed, which work different on different OSes anyways which makes it
hard to test as well)


#### Link to tracking issue
Fixes open-telemetry#9748

Signed-off-by: Moritz Wiesinger <[email protected]>

.github/workflows/scripts/release-prepare-release.sh

@@ -8,6 +8,10 @@ if [ "${CANDIDATE_STABLE}" == "" ] && [ "${CANDIDATE_BETA}" == "" ]; then
     exit 1
 fi
 
+# Expand CURRENT_STABLE and CURRENT_BETA to escape . character by using [.]
+CURRENT_STABLE_ESCAPED=${CURRENT_STABLE//./[.]}
+CURRENT_BETA_ESCAPED=${CURRENT_BETA//./[.]}
+
 RELEASE_VERSION=v${CANDIDATE_STABLE}/v${CANDIDATE_BETA}
 if [ "${CANDIDATE_STABLE}" == "" ]; then
     RELEASE_VERSION="v${CANDIDATE_BETA}"
@@ -26,14 +30,14 @@ git add --all
 git commit -m "Changelog update ${RELEASE_VERSION}"
 
 if [ "${CANDIDATE_STABLE}" != "" ]; then
-    make prepare-release PREVIOUS_VERSION="${CURRENT_STABLE}" RELEASE_CANDIDATE="${CANDIDATE_STABLE}" MODSET=stable
+    make prepare-release PREVIOUS_VERSION="${CURRENT_STABLE_ESCAPED}" RELEASE_CANDIDATE="${CANDIDATE_STABLE}" MODSET=stable
     COMMANDS+="
-- make prepare-release PREVIOUS_VERSION=${CURRENT_STABLE} RELEASE_CANDIDATE=${CANDIDATE_STABLE} MODSET=stable"
+- make prepare-release PREVIOUS_VERSION=${CURRENT_STABLE_ESCAPED} RELEASE_CANDIDATE=${CANDIDATE_STABLE} MODSET=stable"
 fi
 if [ "${CANDIDATE_BETA}" != "" ]; then
-    make prepare-release PREVIOUS_VERSION="${CURRENT_BETA}" RELEASE_CANDIDATE="${CANDIDATE_BETA}" MODSET=beta
+    make prepare-release PREVIOUS_VERSION="${CURRENT_BETA_ESCAPED}" RELEASE_CANDIDATE="${CANDIDATE_BETA}" MODSET=beta
     COMMANDS+="
-- make prepare-release PREVIOUS_VERSION=${CURRENT_BETA} RELEASE_CANDIDATE=${CANDIDATE_BETA} MODSET=beta"
+- make prepare-release PREVIOUS_VERSION=${CURRENT_BETA_ESCAPED} RELEASE_CANDIDATE=${CANDIDATE_BETA} MODSET=beta"
 fi
 git push origin "${BRANCH}"