[semgrep] Fix multiline commit message, false positive on ipv6 addresses and the name Mary (#27015)

Author: cdrubin

.github/workflows/semgrep.yml

@@ -31,7 +31,7 @@ jobs:
       - name: Configure
         run: |
           git config --global --add safe.directory $PWD
-          echo "COMMIT_MESSAGE='$(git log --format=%B -n 1 ${{ github.event.pull_request.head.sha }} | sed "s/\"/'/g")'" | tee /dev/stderr >> "$GITHUB_ENV"
+          echo "COMMIT_MESSAGE='$(git log --format=%B -n 1 ${{ github.event.pull_request.head.sha }} | sed "s/\"/'/g" | tr "\n" " ") '" | tee /dev/stderr >> "$GITHUB_ENV"
           echo "(if the last commit message contains '[skip style guide checks]' Semgrep style guide rule checks will be skipped)"
 
       # Semgrep CI to run on Schedule (Cron) or Manual Dispatch

.semgrep/style-guide-dates-in-docs.yaml

@@ -37,7 +37,7 @@ rules:
         - "/.semgrep/**"
         - "/.github/**"
     patterns:
-      - pattern-regex: "Jan|Feb|Mar[^k]|Apr|May[^b]|Jun[^k]|Jul|Aug|Sep|Nov|Dec[^i]"
+      - pattern-regex: "Jan|Feb|Mar[ c]|Apr|May[ \\.]|Jun[ e]|Jul|Aug|Sep|Nov|Dec[ e]"
 
   - id: style-guide-potential-date-year
     languages: [generic]
@@ -58,4 +58,5 @@ rules:
         - "/.github/**"
     patterns:
       # ignore 2xxx- with a - at the end (double-escape because in string and not a range operator!)
-      - pattern-regex: "20[0-9][0-9][^\\-]"
+      # ignore 200!:: as part of IPv6 address
+      - pattern-regex: "20[0-9][0-9][^\\-:]"